Fix exp2 missing underflows (bug 16521).

Various exp2 implementations in glibc can miss underflow exceptions
when the scaling down part of the calculation is exact (or, in the x86
case, when the conversion from extended precision to the target
precision is exact).  This patch forces the exception in a similar way
to previous fixes.

The x86 exp2f changes may in fact not be needed for this purpose -
it's likely to be the case that no argument of type float has an exp2
result so close to an exact subnormal float value that it equals that
value when rounded to 64 bits (even taking account of variation
between different x86 implementations).  However, they are included
for consistency with the changes to exp2 and so as to fix the exp2f
part of bug 18875 by ensuring that excess range and precision is
removed from underflowing return values.

Tested for x86_64, x86 and mips64.

	[BZ #16521]
	[BZ #18875]
	* math/e_exp2l.c (__ieee754_exp2l): Force underflow exception for
	small results.
	* sysdeps/i386/fpu/e_exp2.S (dbl_min): New object.
	(MO): New macro.
	(__ieee754_exp2): For small results, force underflow exception and
	remove excess range and precision from return value.
	* sysdeps/i386/fpu/e_exp2f.S (flt_min): New object.
	(MO): New macro.
	(__ieee754_exp2f): For small results, force underflow exception
	and remove excess range and precision from return value.
	* sysdeps/i386/fpu/e_exp2l.S (ldbl_min): New object.
	(MO): New macro.
	(__ieee754_exp2l): Force underflow exception for small results.
	* sysdeps/ieee754/dbl-64/e_exp2.c (__ieee754_exp2): Likewise.
	* sysdeps/ieee754/flt-32/e_exp2f.c (__ieee754_exp2f): Likewise.
	* sysdeps/x86_64/fpu/e_exp2l.S (ldbl_min): New object.
	(MO): New macro.
	(__ieee754_exp2l): Force underflow exception for small results.
	* math/auto-libm-test-in: Add more tests or exp2.
	* math/auto-libm-test-out: Regenerated.

3 files changed, 608 insertions, 2 deletions

diff --git a/math/auto-libm-test-in b/math/auto-libm-test-in
index 002a1fc..15c9146 100644
--- a/math/auto-libm-test-in
+++ b/math/auto-libm-test-in
@@ -1497,6 +1497,29 @@ exp2 1023
 exp2 -1074
 exp2 16383
 exp2 -16400
+exp2 -126.125
+exp2 -126.25
+exp2 -126.375
+exp2 -126.5
+exp2 -126.625
+exp2 -126.75
+exp2 -126.875
+exp2 -1022.125
+exp2 -1022.25
+exp2 -1022.375
+exp2 -1022.5
+exp2 -1022.625
+exp2 -1022.75
+exp2 -1022.875
+exp2 -0x3.fe4e8p+8
+exp2 -0x3.fe513p+8
+exp2 -16382.125
+exp2 -16382.25
+exp2 -16382.375
+exp2 -16382.5
+exp2 -16382.625
+exp2 -16382.75
+exp2 -16382.875
 exp2 0x1p-10
 exp2 -0x1p-10
 exp2 0x1p-20
diff --git a/math/auto-libm-test-out b/math/auto-libm-test-out
index 42fa83e..c007f24 100644
--- a/math/auto-libm-test-out
+++ b/math/auto-libm-test-out
@@ -117963,6 +117963,581 @@ exp2 -16400
 = exp2 tonearest ldbl-128ibm -0x4.01p+12L : 0x0p+0L : inexact-ok underflow errno-erange
 = exp2 towardzero ldbl-128ibm -0x4.01p+12L : 0x0p+0L : inexact-ok underflow errno-erange
 = exp2 upward ldbl-128ibm -0x4.01p+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+exp2 -126.125
+= exp2 downward flt-32 -0x7.e2p+4f : 0x3.ab0318p-128f : inexact-ok underflow errno-erange-ok
+= exp2 tonearest flt-32 -0x7.e2p+4f : 0x3.ab0318p-128f : inexact-ok underflow errno-erange-ok
+= exp2 towardzero flt-32 -0x7.e2p+4f : 0x3.ab0318p-128f : inexact-ok underflow errno-erange-ok
+= exp2 upward flt-32 -0x7.e2p+4f : 0x3.ab032p-128f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x7.e2p+4 : 0x3.ab031b9f7490ep-128 : inexact-ok
+= exp2 tonearest dbl-64 -0x7.e2p+4 : 0x3.ab031b9f7490ep-128 : inexact-ok
+= exp2 towardzero dbl-64 -0x7.e2p+4 : 0x3.ab031b9f7490ep-128 : inexact-ok
+= exp2 upward dbl-64 -0x7.e2p+4 : 0x3.ab031b9f7491p-128 : inexact-ok
+= exp2 downward ldbl-96-intel -0x7.e2p+4L : 0x3.ab031b9f7490e4b8p-128L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x7.e2p+4L : 0x3.ab031b9f7490e4bcp-128L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x7.e2p+4L : 0x3.ab031b9f7490e4b8p-128L : inexact-ok
+= exp2 upward ldbl-96-intel -0x7.e2p+4L : 0x3.ab031b9f7490e4bcp-128L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x7.e2p+4L : 0x3.ab031b9f7490e4b8p-128L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x7.e2p+4L : 0x3.ab031b9f7490e4bcp-128L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x7.e2p+4L : 0x3.ab031b9f7490e4b8p-128L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x7.e2p+4L : 0x3.ab031b9f7490e4bcp-128L : inexact-ok
+= exp2 downward ldbl-128 -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc1b8p-128L : inexact-ok
+= exp2 tonearest ldbl-128 -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc1bap-128L : inexact-ok
+= exp2 towardzero ldbl-128 -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc1b8p-128L : inexact-ok
+= exp2 upward ldbl-128 -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc1bap-128L : inexact-ok
+= exp2 downward ldbl-128ibm -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc1p-128L : inexact-ok
+= exp2 tonearest ldbl-128ibm -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc2p-128L : inexact-ok
+= exp2 towardzero ldbl-128ibm -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc1p-128L : inexact-ok
+= exp2 upward ldbl-128ibm -0x7.e2p+4L : 0x3.ab031b9f7490e4bb40b5d6cdc2p-128L : inexact-ok
+exp2 -126.25
+= exp2 downward flt-32 -0x7.e4p+4f : 0x3.5d13fp-128f : inexact-ok underflow errno-erange-ok
+= exp2 tonearest flt-32 -0x7.e4p+4f : 0x3.5d13fp-128f : inexact-ok underflow errno-erange-ok
+= exp2 towardzero flt-32 -0x7.e4p+4f : 0x3.5d13fp-128f : inexact-ok underflow errno-erange-ok
+= exp2 upward flt-32 -0x7.e4p+4f : 0x3.5d13f8p-128f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x7.e4p+4 : 0x3.5d13f32b5a75ap-128 : inexact-ok
+= exp2 tonearest dbl-64 -0x7.e4p+4 : 0x3.5d13f32b5a75ap-128 : inexact-ok
+= exp2 towardzero dbl-64 -0x7.e4p+4 : 0x3.5d13f32b5a75ap-128 : inexact-ok
+= exp2 upward dbl-64 -0x7.e4p+4 : 0x3.5d13f32b5a75cp-128 : inexact-ok
+= exp2 downward ldbl-96-intel -0x7.e4p+4L : 0x3.5d13f32b5a75abdp-128L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x7.e4p+4L : 0x3.5d13f32b5a75abdp-128L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x7.e4p+4L : 0x3.5d13f32b5a75abdp-128L : inexact-ok
+= exp2 upward ldbl-96-intel -0x7.e4p+4L : 0x3.5d13f32b5a75abd4p-128L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x7.e4p+4L : 0x3.5d13f32b5a75abdp-128L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x7.e4p+4L : 0x3.5d13f32b5a75abdp-128L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x7.e4p+4L : 0x3.5d13f32b5a75abdp-128L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x7.e4p+4L : 0x3.5d13f32b5a75abd4p-128L : inexact-ok
+= exp2 downward ldbl-128 -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-128L : inexact-ok
+= exp2 tonearest ldbl-128 -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-128L : inexact-ok
+= exp2 towardzero ldbl-128 -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-128L : inexact-ok
+= exp2 upward ldbl-128 -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee640b6p-128L : inexact-ok
+= exp2 downward ldbl-128ibm -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee64p-128L : inexact-ok
+= exp2 tonearest ldbl-128ibm -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee641p-128L : inexact-ok
+= exp2 towardzero ldbl-128ibm -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee64p-128L : inexact-ok
+= exp2 upward ldbl-128ibm -0x7.e4p+4L : 0x3.5d13f32b5a75abd0e69a2ee641p-128L : inexact-ok
+exp2 -126.375
+= exp2 downward flt-32 -0x7.e6p+4f : 0x3.159ca8p-128f : inexact-ok underflow errno-erange-ok
+= exp2 tonearest flt-32 -0x7.e6p+4f : 0x3.159ca8p-128f : inexact-ok underflow errno-erange-ok
+= exp2 towardzero flt-32 -0x7.e6p+4f : 0x3.159ca8p-128f : inexact-ok underflow errno-erange-ok
+= exp2 upward flt-32 -0x7.e6p+4f : 0x3.159cbp-128f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x7.e6p+4 : 0x3.159ca845541b6p-128 : inexact-ok
+= exp2 tonearest dbl-64 -0x7.e6p+4 : 0x3.159ca845541b6p-128 : inexact-ok
+= exp2 towardzero dbl-64 -0x7.e6p+4 : 0x3.159ca845541b6p-128 : inexact-ok
+= exp2 upward dbl-64 -0x7.e6p+4 : 0x3.159ca845541b8p-128 : inexact-ok
+= exp2 downward ldbl-96-intel -0x7.e6p+4L : 0x3.159ca845541b6b74p-128L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x7.e6p+4L : 0x3.159ca845541b6b74p-128L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x7.e6p+4L : 0x3.159ca845541b6b74p-128L : inexact-ok
+= exp2 upward ldbl-96-intel -0x7.e6p+4L : 0x3.159ca845541b6b78p-128L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x7.e6p+4L : 0x3.159ca845541b6b74p-128L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x7.e6p+4L : 0x3.159ca845541b6b74p-128L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x7.e6p+4L : 0x3.159ca845541b6b74p-128L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x7.e6p+4L : 0x3.159ca845541b6b78p-128L : inexact-ok
+= exp2 downward ldbl-128 -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab43259376p-128L : inexact-ok
+= exp2 tonearest ldbl-128 -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab43259376p-128L : inexact-ok
+= exp2 towardzero ldbl-128 -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab43259376p-128L : inexact-ok
+= exp2 upward ldbl-128 -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab43259378p-128L : inexact-ok
+= exp2 downward ldbl-128ibm -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab432593p-128L : inexact-ok
+= exp2 tonearest ldbl-128ibm -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab432593p-128L : inexact-ok
+= exp2 towardzero ldbl-128ibm -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab432593p-128L : inexact-ok
+= exp2 upward ldbl-128ibm -0x7.e6p+4L : 0x3.159ca845541b6b74f8ab432594p-128L : inexact-ok
+exp2 -126.5
+= exp2 downward flt-32 -0x7.e8p+4f : 0x2.d413c8p-128f : inexact-ok underflow errno-erange-ok
+= exp2 tonearest flt-32 -0x7.e8p+4f : 0x2.d413dp-128f : inexact-ok underflow errno-erange-ok
+= exp2 towardzero flt-32 -0x7.e8p+4f : 0x2.d413c8p-128f : inexact-ok underflow errno-erange-ok
+= exp2 upward flt-32 -0x7.e8p+4f : 0x2.d413dp-128f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x7.e8p+4 : 0x2.d413cccfe7798p-128 : inexact-ok
+= exp2 tonearest dbl-64 -0x7.e8p+4 : 0x2.d413cccfe779ap-128 : inexact-ok
+= exp2 towardzero dbl-64 -0x7.e8p+4 : 0x2.d413cccfe7798p-128 : inexact-ok
+= exp2 upward dbl-64 -0x7.e8p+4 : 0x2.d413cccfe779ap-128 : inexact-ok
+= exp2 downward ldbl-96-intel -0x7.e8p+4L : 0x2.d413cccfe779921p-128L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x7.e8p+4L : 0x2.d413cccfe779921p-128L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x7.e8p+4L : 0x2.d413cccfe779921p-128L : inexact-ok
+= exp2 upward ldbl-96-intel -0x7.e8p+4L : 0x2.d413cccfe7799214p-128L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x7.e8p+4L : 0x2.d413cccfe779921p-128L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x7.e8p+4L : 0x2.d413cccfe779921p-128L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x7.e8p+4L : 0x2.d413cccfe779921p-128L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x7.e8p+4L : 0x2.d413cccfe7799214p-128L : inexact-ok
+= exp2 downward ldbl-128 -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd52ap-128L : inexact-ok
+= exp2 tonearest ldbl-128 -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd52ap-128L : inexact-ok
+= exp2 towardzero ldbl-128 -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd52ap-128L : inexact-ok
+= exp2 upward ldbl-128 -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd52cp-128L : inexact-ok
+= exp2 downward ldbl-128ibm -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd5p-128L : inexact-ok
+= exp2 tonearest ldbl-128ibm -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd5p-128L : inexact-ok
+= exp2 towardzero ldbl-128ibm -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd5p-128L : inexact-ok
+= exp2 upward ldbl-128ibm -0x7.e8p+4L : 0x2.d413cccfe779921165f626cdd6p-128L : inexact-ok
+exp2 -126.625
+= exp2 downward flt-32 -0x7.eap+4f : 0x2.97fb58p-128f : inexact-ok underflow errno-erange-ok
+= exp2 tonearest flt-32 -0x7.eap+4f : 0x2.97fb58p-128f : inexact-ok underflow errno-erange-ok
+= exp2 towardzero flt-32 -0x7.eap+4f : 0x2.97fb58p-128f : inexact-ok underflow errno-erange-ok
+= exp2 upward flt-32 -0x7.eap+4f : 0x2.97fb6p-128f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x7.eap+4 : 0x2.97fb5aa6c544ep-128 : inexact-ok
+= exp2 tonearest dbl-64 -0x7.eap+4 : 0x2.97fb5aa6c544ep-128 : inexact-ok
+= exp2 towardzero dbl-64 -0x7.eap+4 : 0x2.97fb5aa6c544ep-128 : inexact-ok
+= exp2 upward dbl-64 -0x7.eap+4 : 0x2.97fb5aa6c545p-128 : inexact-ok
+= exp2 downward ldbl-96-intel -0x7.eap+4L : 0x2.97fb5aa6c544e3a8p-128L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x7.eap+4L : 0x2.97fb5aa6c544e3a8p-128L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x7.eap+4L : 0x2.97fb5aa6c544e3a8p-128L : inexact-ok
+= exp2 upward ldbl-96-intel -0x7.eap+4L : 0x2.97fb5aa6c544e3acp-128L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x7.eap+4L : 0x2.97fb5aa6c544e3a8p-128L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x7.eap+4L : 0x2.97fb5aa6c544e3a8p-128L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x7.eap+4L : 0x2.97fb5aa6c544e3a8p-128L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x7.eap+4L : 0x2.97fb5aa6c544e3acp-128L : inexact-ok
+= exp2 downward ldbl-128 -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885c4p-128L : inexact-ok
+= exp2 tonearest ldbl-128 -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885c42p-128L : inexact-ok
+= exp2 towardzero ldbl-128 -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885c4p-128L : inexact-ok
+= exp2 upward ldbl-128 -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885c42p-128L : inexact-ok
+= exp2 downward ldbl-128ibm -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885cp-128L : inexact-ok
+= exp2 tonearest ldbl-128ibm -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885cp-128L : inexact-ok
+= exp2 towardzero ldbl-128ibm -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885cp-128L : inexact-ok
+= exp2 upward ldbl-128ibm -0x7.eap+4L : 0x2.97fb5aa6c544e3a872f5fd885dp-128L : inexact-ok
+exp2 -126.75
+= exp2 downward flt-32 -0x7.ecp+4f : 0x2.60dfcp-128f : inexact-ok underflow errno-erange-ok
+= exp2 tonearest flt-32 -0x7.ecp+4f : 0x2.60dfcp-128f : inexact-ok underflow errno-erange-ok
+= exp2 towardzero flt-32 -0x7.ecp+4f : 0x2.60dfcp-128f : inexact-ok underflow errno-erange-ok
+= exp2 upward flt-32 -0x7.ecp+4f : 0x2.60dfc8p-128f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x7.ecp+4 : 0x2.60dfc14636e2ap-128 : inexact-ok
+= exp2 tonearest dbl-64 -0x7.ecp+4 : 0x2.60dfc14636e2ap-128 : inexact-ok
+= exp2 towardzero dbl-64 -0x7.ecp+4 : 0x2.60dfc14636e2ap-128 : inexact-ok
+= exp2 upward dbl-64 -0x7.ecp+4 : 0x2.60dfc14636e2cp-128 : inexact-ok
+= exp2 downward ldbl-96-intel -0x7.ecp+4L : 0x2.60dfc14636e2a5bcp-128L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x7.ecp+4L : 0x2.60dfc14636e2a5bcp-128L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x7.ecp+4L : 0x2.60dfc14636e2a5bcp-128L : inexact-ok
+= exp2 upward ldbl-96-intel -0x7.ecp+4L : 0x2.60dfc14636e2a5cp-128L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x7.ecp+4L : 0x2.60dfc14636e2a5bcp-128L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x7.ecp+4L : 0x2.60dfc14636e2a5bcp-128L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x7.ecp+4L : 0x2.60dfc14636e2a5bcp-128L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x7.ecp+4L : 0x2.60dfc14636e2a5cp-128L : inexact-ok
+= exp2 downward ldbl-128 -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60b90ap-128L : inexact-ok
+= exp2 tonearest ldbl-128 -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60b90cp-128L : inexact-ok
+= exp2 towardzero ldbl-128 -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60b90ap-128L : inexact-ok
+= exp2 upward ldbl-128 -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60b90cp-128L : inexact-ok
+= exp2 downward ldbl-128ibm -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60b9p-128L : inexact-ok
+= exp2 tonearest ldbl-128ibm -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60b9p-128L : inexact-ok
+= exp2 towardzero ldbl-128ibm -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60b9p-128L : inexact-ok
+= exp2 upward ldbl-128ibm -0x7.ecp+4L : 0x2.60dfc14636e2a5bd1ab48c60bap-128L : inexact-ok
+exp2 -126.875
+= exp2 downward flt-32 -0x7.eep+4f : 0x2.2e57p-128f : inexact-ok underflow errno-erange-ok
+= exp2 tonearest flt-32 -0x7.eep+4f : 0x2.2e5708p-128f : inexact-ok underflow errno-erange-ok
+= exp2 towardzero flt-32 -0x7.eep+4f : 0x2.2e57p-128f : inexact-ok underflow errno-erange-ok
+= exp2 upward flt-32 -0x7.eep+4f : 0x2.2e5708p-128f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x7.eep+4 : 0x2.2e57078faa2f4p-128 : inexact-ok
+= exp2 tonearest dbl-64 -0x7.eep+4 : 0x2.2e57078faa2f6p-128 : inexact-ok
+= exp2 towardzero dbl-64 -0x7.eep+4 : 0x2.2e57078faa2f4p-128 : inexact-ok
+= exp2 upward dbl-64 -0x7.eep+4 : 0x2.2e57078faa2f6p-128 : inexact-ok
+= exp2 downward ldbl-96-intel -0x7.eep+4L : 0x2.2e57078faa2f5b98p-128L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x7.eep+4L : 0x2.2e57078faa2f5b9cp-128L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x7.eep+4L : 0x2.2e57078faa2f5b98p-128L : inexact-ok
+= exp2 upward ldbl-96-intel -0x7.eep+4L : 0x2.2e57078faa2f5b9cp-128L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x7.eep+4L : 0x2.2e57078faa2f5b98p-128L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x7.eep+4L : 0x2.2e57078faa2f5b9cp-128L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x7.eep+4L : 0x2.2e57078faa2f5b98p-128L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x7.eep+4L : 0x2.2e57078faa2f5b9cp-128L : inexact-ok
+= exp2 downward ldbl-128 -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d6294p-128L : inexact-ok
+= exp2 tonearest ldbl-128 -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d6294p-128L : inexact-ok
+= exp2 towardzero ldbl-128 -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d6294p-128L : inexact-ok
+= exp2 upward ldbl-128 -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d6296p-128L : inexact-ok
+= exp2 downward ldbl-128ibm -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d62p-128L : inexact-ok
+= exp2 tonearest ldbl-128ibm -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d63p-128L : inexact-ok
+= exp2 towardzero ldbl-128ibm -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d62p-128L : inexact-ok
+= exp2 upward ldbl-128ibm -0x7.eep+4L : 0x2.2e57078faa2f5b9bef918a1d63p-128L : inexact-ok
+exp2 -1022.125
+= exp2 downward flt-32 -0x3.fe2p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.fe2p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.fe2p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.fe2p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.fe2p+8 : 0x3.ab031b9f7490cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.fe2p+8 : 0x3.ab031b9f7491p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.fe2p+8 : 0x3.ab031b9f7490cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.fe2p+8 : 0x3.ab031b9f7491p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.fe2p+8L : 0x3.ab031b9f7490e4b8p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.fe2p+8L : 0x3.ab031b9f7490e4bcp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.fe2p+8L : 0x3.ab031b9f7490e4b8p-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.fe2p+8L : 0x3.ab031b9f7490e4bcp-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.fe2p+8L : 0x3.ab031b9f7490e4b8p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.fe2p+8L : 0x3.ab031b9f7490e4bcp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.fe2p+8L : 0x3.ab031b9f7490e4b8p-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.fe2p+8L : 0x3.ab031b9f7490e4bcp-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.fe2p+8L : 0x3.ab031b9f7490e4bb40b5d6cdc1b8p-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.fe2p+8L : 0x3.ab031b9f7490e4bb40b5d6cdc1bap-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.fe2p+8L : 0x3.ab031b9f7490e4bb40b5d6cdc1b8p-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.fe2p+8L : 0x3.ab031b9f7490e4bb40b5d6cdc1bap-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.fe2p+8L : 0x3.ab031b9f7490cp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.fe2p+8L : 0x3.ab031b9f7491p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.fe2p+8L : 0x3.ab031b9f7490cp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.fe2p+8L : 0x3.ab031b9f7491p-1024L : inexact-ok underflow errno-erange-ok
+exp2 -1022.25
+= exp2 downward flt-32 -0x3.fe4p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.fe4p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.fe4p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.fe4p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.fe4p+8 : 0x3.5d13f32b5a758p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.fe4p+8 : 0x3.5d13f32b5a75cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.fe4p+8 : 0x3.5d13f32b5a758p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.fe4p+8 : 0x3.5d13f32b5a75cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.fe4p+8L : 0x3.5d13f32b5a75abdp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.fe4p+8L : 0x3.5d13f32b5a75abdp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.fe4p+8L : 0x3.5d13f32b5a75abdp-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.fe4p+8L : 0x3.5d13f32b5a75abd4p-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.fe4p+8L : 0x3.5d13f32b5a75abdp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.fe4p+8L : 0x3.5d13f32b5a75abdp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.fe4p+8L : 0x3.5d13f32b5a75abdp-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.fe4p+8L : 0x3.5d13f32b5a75abd4p-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.fe4p+8L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.fe4p+8L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.fe4p+8L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.fe4p+8L : 0x3.5d13f32b5a75abd0e69a2ee640b6p-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.fe4p+8L : 0x3.5d13f32b5a758p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.fe4p+8L : 0x3.5d13f32b5a75cp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.fe4p+8L : 0x3.5d13f32b5a758p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.fe4p+8L : 0x3.5d13f32b5a75cp-1024L : inexact-ok underflow errno-erange-ok
+exp2 -1022.375
+= exp2 downward flt-32 -0x3.fe6p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.fe6p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.fe6p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.fe6p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.fe6p+8 : 0x3.159ca845541b4p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.fe6p+8 : 0x3.159ca845541b8p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.fe6p+8 : 0x3.159ca845541b4p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.fe6p+8 : 0x3.159ca845541b8p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.fe6p+8L : 0x3.159ca845541b6b74p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.fe6p+8L : 0x3.159ca845541b6b74p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.fe6p+8L : 0x3.159ca845541b6b74p-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.fe6p+8L : 0x3.159ca845541b6b78p-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.fe6p+8L : 0x3.159ca845541b6b74p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.fe6p+8L : 0x3.159ca845541b6b74p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.fe6p+8L : 0x3.159ca845541b6b74p-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.fe6p+8L : 0x3.159ca845541b6b78p-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.fe6p+8L : 0x3.159ca845541b6b74f8ab43259376p-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.fe6p+8L : 0x3.159ca845541b6b74f8ab43259376p-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.fe6p+8L : 0x3.159ca845541b6b74f8ab43259376p-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.fe6p+8L : 0x3.159ca845541b6b74f8ab43259378p-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.fe6p+8L : 0x3.159ca845541b4p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.fe6p+8L : 0x3.159ca845541b8p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.fe6p+8L : 0x3.159ca845541b4p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.fe6p+8L : 0x3.159ca845541b8p-1024L : inexact-ok underflow errno-erange-ok
+exp2 -1022.5
+= exp2 downward flt-32 -0x3.fe8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.fe8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.fe8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.fe8p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.fe8p+8 : 0x2.d413cccfe7798p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.fe8p+8 : 0x2.d413cccfe7798p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.fe8p+8 : 0x2.d413cccfe7798p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.fe8p+8 : 0x2.d413cccfe779cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.fe8p+8L : 0x2.d413cccfe779921p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.fe8p+8L : 0x2.d413cccfe779921p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.fe8p+8L : 0x2.d413cccfe779921p-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.fe8p+8L : 0x2.d413cccfe7799214p-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.fe8p+8L : 0x2.d413cccfe779921p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.fe8p+8L : 0x2.d413cccfe779921p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.fe8p+8L : 0x2.d413cccfe779921p-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.fe8p+8L : 0x2.d413cccfe7799214p-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.fe8p+8L : 0x2.d413cccfe779921165f626cdd52ap-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.fe8p+8L : 0x2.d413cccfe779921165f626cdd52ap-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.fe8p+8L : 0x2.d413cccfe779921165f626cdd52ap-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.fe8p+8L : 0x2.d413cccfe779921165f626cdd52cp-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.fe8p+8L : 0x2.d413cccfe7798p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.fe8p+8L : 0x2.d413cccfe7798p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.fe8p+8L : 0x2.d413cccfe7798p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.fe8p+8L : 0x2.d413cccfe779cp-1024L : inexact-ok underflow errno-erange-ok
+exp2 -1022.625
+= exp2 downward flt-32 -0x3.feap+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.feap+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.feap+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.feap+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.feap+8 : 0x2.97fb5aa6c544cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.feap+8 : 0x2.97fb5aa6c545p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.feap+8 : 0x2.97fb5aa6c544cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.feap+8 : 0x2.97fb5aa6c545p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.feap+8L : 0x2.97fb5aa6c544e3a8p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.feap+8L : 0x2.97fb5aa6c544e3a8p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.feap+8L : 0x2.97fb5aa6c544e3a8p-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.feap+8L : 0x2.97fb5aa6c544e3acp-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.feap+8L : 0x2.97fb5aa6c544e3a8p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.feap+8L : 0x2.97fb5aa6c544e3a8p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.feap+8L : 0x2.97fb5aa6c544e3a8p-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.feap+8L : 0x2.97fb5aa6c544e3acp-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.feap+8L : 0x2.97fb5aa6c544e3a872f5fd885c4p-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.feap+8L : 0x2.97fb5aa6c544e3a872f5fd885c42p-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.feap+8L : 0x2.97fb5aa6c544e3a872f5fd885c4p-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.feap+8L : 0x2.97fb5aa6c544e3a872f5fd885c42p-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.feap+8L : 0x2.97fb5aa6c544cp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.feap+8L : 0x2.97fb5aa6c545p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.feap+8L : 0x2.97fb5aa6c544cp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.feap+8L : 0x2.97fb5aa6c545p-1024L : inexact-ok underflow errno-erange-ok
+exp2 -1022.75
+= exp2 downward flt-32 -0x3.fecp+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.fecp+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.fecp+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.fecp+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.fecp+8 : 0x2.60dfc14636e28p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.fecp+8 : 0x2.60dfc14636e2cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.fecp+8 : 0x2.60dfc14636e28p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.fecp+8 : 0x2.60dfc14636e2cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.fecp+8L : 0x2.60dfc14636e2a5bcp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.fecp+8L : 0x2.60dfc14636e2a5bcp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.fecp+8L : 0x2.60dfc14636e2a5bcp-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.fecp+8L : 0x2.60dfc14636e2a5cp-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.fecp+8L : 0x2.60dfc14636e2a5bcp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.fecp+8L : 0x2.60dfc14636e2a5bcp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.fecp+8L : 0x2.60dfc14636e2a5bcp-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.fecp+8L : 0x2.60dfc14636e2a5cp-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.fecp+8L : 0x2.60dfc14636e2a5bd1ab48c60b90ap-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.fecp+8L : 0x2.60dfc14636e2a5bd1ab48c60b90cp-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.fecp+8L : 0x2.60dfc14636e2a5bd1ab48c60b90ap-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.fecp+8L : 0x2.60dfc14636e2a5bd1ab48c60b90cp-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.fecp+8L : 0x2.60dfc14636e28p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.fecp+8L : 0x2.60dfc14636e2cp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.fecp+8L : 0x2.60dfc14636e28p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.fecp+8L : 0x2.60dfc14636e2cp-1024L : inexact-ok underflow errno-erange-ok
+exp2 -1022.875
+= exp2 downward flt-32 -0x3.feep+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.feep+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.feep+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.feep+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.feep+8 : 0x2.2e57078faa2f4p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.feep+8 : 0x2.2e57078faa2f4p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.feep+8 : 0x2.2e57078faa2f4p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.feep+8 : 0x2.2e57078faa2f8p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.feep+8L : 0x2.2e57078faa2f5b98p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.feep+8L : 0x2.2e57078faa2f5b9cp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.feep+8L : 0x2.2e57078faa2f5b98p-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.feep+8L : 0x2.2e57078faa2f5b9cp-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.feep+8L : 0x2.2e57078faa2f5b98p-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.feep+8L : 0x2.2e57078faa2f5b9cp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.feep+8L : 0x2.2e57078faa2f5b98p-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.feep+8L : 0x2.2e57078faa2f5b9cp-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.feep+8L : 0x2.2e57078faa2f5b9bef918a1d6294p-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.feep+8L : 0x2.2e57078faa2f5b9bef918a1d6294p-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.feep+8L : 0x2.2e57078faa2f5b9bef918a1d6294p-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.feep+8L : 0x2.2e57078faa2f5b9bef918a1d6296p-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.feep+8L : 0x2.2e57078faa2f4p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.feep+8L : 0x2.2e57078faa2f4p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.feep+8L : 0x2.2e57078faa2f4p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.feep+8L : 0x2.2e57078faa2f8p-1024L : inexact-ok underflow errno-erange-ok
+exp2 -0x3.fe4e8p+8
+= exp2 downward flt-32 -0x3.fe4e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.fe4e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.fe4e8p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.fe4e8p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.fe4e8p+8 : 0x3.3bed4179f82bcp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.fe4e8p+8 : 0x3.3bed4179f82bcp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.fe4e8p+8 : 0x3.3bed4179f82bcp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.fe4e8p+8 : 0x3.3bed4179f82cp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.fe4e8p+8L : 0x3.3bed4179f82bcp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.fe4e8p+8L : 0x3.3bed4179f82bc004p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.fe4e8p+8L : 0x3.3bed4179f82bcp-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.fe4e8p+8L : 0x3.3bed4179f82bc004p-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.fe4e8p+8L : 0x3.3bed4179f82bcp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.fe4e8p+8L : 0x3.3bed4179f82bc004p-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.fe4e8p+8L : 0x3.3bed4179f82bcp-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.fe4e8p+8L : 0x3.3bed4179f82bc004p-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.fe4e8p+8L : 0x3.3bed4179f82bc002979648b91cf8p-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.fe4e8p+8L : 0x3.3bed4179f82bc002979648b91cfap-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.fe4e8p+8L : 0x3.3bed4179f82bc002979648b91cf8p-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.fe4e8p+8L : 0x3.3bed4179f82bc002979648b91cfap-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.fe4e8p+8L : 0x3.3bed4179f82bcp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.fe4e8p+8L : 0x3.3bed4179f82bcp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.fe4e8p+8L : 0x3.3bed4179f82bcp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.fe4e8p+8L : 0x3.3bed4179f82cp-1024L : inexact-ok underflow errno-erange-ok
+exp2 -0x3.fe513p+8
+= exp2 downward flt-32 -0x3.fe513p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.fe513p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.fe513p+8f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.fe513p+8f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.fe513p+8 : 0x3.35ec906f22fb8p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 tonearest dbl-64 -0x3.fe513p+8 : 0x3.35ec906f22fbcp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 towardzero dbl-64 -0x3.fe513p+8 : 0x3.35ec906f22fb8p-1024 : inexact-ok underflow errno-erange-ok
+= exp2 upward dbl-64 -0x3.fe513p+8 : 0x3.35ec906f22fbcp-1024 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.fe513p+8L : 0x3.35ec906f22fbbffcp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-intel -0x3.fe513p+8L : 0x3.35ec906f22fbcp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-intel -0x3.fe513p+8L : 0x3.35ec906f22fbbffcp-1024L : inexact-ok
+= exp2 upward ldbl-96-intel -0x3.fe513p+8L : 0x3.35ec906f22fbcp-1024L : inexact-ok
+= exp2 downward ldbl-96-m68k -0x3.fe513p+8L : 0x3.35ec906f22fbbffcp-1024L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.fe513p+8L : 0x3.35ec906f22fbcp-1024L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.fe513p+8L : 0x3.35ec906f22fbbffcp-1024L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.fe513p+8L : 0x3.35ec906f22fbcp-1024L : inexact-ok
+= exp2 downward ldbl-128 -0x3.fe513p+8L : 0x3.35ec906f22fbbffeffc0d272938p-1024L : inexact-ok
+= exp2 tonearest ldbl-128 -0x3.fe513p+8L : 0x3.35ec906f22fbbffeffc0d272938p-1024L : inexact-ok
+= exp2 towardzero ldbl-128 -0x3.fe513p+8L : 0x3.35ec906f22fbbffeffc0d272938p-1024L : inexact-ok
+= exp2 upward ldbl-128 -0x3.fe513p+8L : 0x3.35ec906f22fbbffeffc0d2729382p-1024L : inexact-ok
+= exp2 downward ldbl-128ibm -0x3.fe513p+8L : 0x3.35ec906f22fb8p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128ibm -0x3.fe513p+8L : 0x3.35ec906f22fbcp-1024L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128ibm -0x3.fe513p+8L : 0x3.35ec906f22fb8p-1024L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128ibm -0x3.fe513p+8L : 0x3.35ec906f22fbcp-1024L : inexact-ok underflow errno-erange-ok
+exp2 -16382.125
+= exp2 downward flt-32 -0x3.ffe2p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.ffe2p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.ffe2p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.ffe2p+12f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.ffe2p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 tonearest dbl-64 -0x3.ffe2p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 towardzero dbl-64 -0x3.ffe2p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 upward dbl-64 -0x3.ffe2p+12 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.ffe2p+12L : 0x3.ab031b9f7490e4b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-96-intel -0x3.ffe2p+12L : 0x3.ab031b9f7490e4b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-96-intel -0x3.ffe2p+12L : 0x3.ab031b9f7490e4b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-96-intel -0x3.ffe2p+12L : 0x3.ab031b9f7490e4cp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-m68k -0x3.ffe2p+12L : 0x3.ab031b9f7490e4b8p-16384L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.ffe2p+12L : 0x3.ab031b9f7490e4bcp-16384L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.ffe2p+12L : 0x3.ab031b9f7490e4b8p-16384L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.ffe2p+12L : 0x3.ab031b9f7490e4bcp-16384L : inexact-ok
+= exp2 downward ldbl-128 -0x3.ffe2p+12L : 0x3.ab031b9f7490e4bb40b5d6cdc1b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128 -0x3.ffe2p+12L : 0x3.ab031b9f7490e4bb40b5d6cdc1b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128 -0x3.ffe2p+12L : 0x3.ab031b9f7490e4bb40b5d6cdc1b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128 -0x3.ffe2p+12L : 0x3.ab031b9f7490e4bb40b5d6cdc1bcp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-128ibm -0x3.ffe2p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 tonearest ldbl-128ibm -0x3.ffe2p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 towardzero ldbl-128ibm -0x3.ffe2p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 upward ldbl-128ibm -0x3.ffe2p+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+exp2 -16382.25
+= exp2 downward flt-32 -0x3.ffe4p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.ffe4p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.ffe4p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.ffe4p+12f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.ffe4p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 tonearest dbl-64 -0x3.ffe4p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 towardzero dbl-64 -0x3.ffe4p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 upward dbl-64 -0x3.ffe4p+12 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.ffe4p+12L : 0x3.5d13f32b5a75abdp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-96-intel -0x3.ffe4p+12L : 0x3.5d13f32b5a75abdp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-96-intel -0x3.ffe4p+12L : 0x3.5d13f32b5a75abdp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-96-intel -0x3.ffe4p+12L : 0x3.5d13f32b5a75abd8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-m68k -0x3.ffe4p+12L : 0x3.5d13f32b5a75abdp-16384L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.ffe4p+12L : 0x3.5d13f32b5a75abdp-16384L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.ffe4p+12L : 0x3.5d13f32b5a75abdp-16384L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.ffe4p+12L : 0x3.5d13f32b5a75abd4p-16384L : inexact-ok
+= exp2 downward ldbl-128 -0x3.ffe4p+12L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128 -0x3.ffe4p+12L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128 -0x3.ffe4p+12L : 0x3.5d13f32b5a75abd0e69a2ee640b4p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128 -0x3.ffe4p+12L : 0x3.5d13f32b5a75abd0e69a2ee640b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-128ibm -0x3.ffe4p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 tonearest ldbl-128ibm -0x3.ffe4p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 towardzero ldbl-128ibm -0x3.ffe4p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 upward ldbl-128ibm -0x3.ffe4p+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+exp2 -16382.375
+= exp2 downward flt-32 -0x3.ffe6p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.ffe6p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.ffe6p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.ffe6p+12f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.ffe6p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 tonearest dbl-64 -0x3.ffe6p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 towardzero dbl-64 -0x3.ffe6p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 upward dbl-64 -0x3.ffe6p+12 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.ffe6p+12L : 0x3.159ca845541b6b7p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-96-intel -0x3.ffe6p+12L : 0x3.159ca845541b6b78p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-96-intel -0x3.ffe6p+12L : 0x3.159ca845541b6b7p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-96-intel -0x3.ffe6p+12L : 0x3.159ca845541b6b78p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-m68k -0x3.ffe6p+12L : 0x3.159ca845541b6b74p-16384L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.ffe6p+12L : 0x3.159ca845541b6b74p-16384L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.ffe6p+12L : 0x3.159ca845541b6b74p-16384L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.ffe6p+12L : 0x3.159ca845541b6b78p-16384L : inexact-ok
+= exp2 downward ldbl-128 -0x3.ffe6p+12L : 0x3.159ca845541b6b74f8ab43259374p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128 -0x3.ffe6p+12L : 0x3.159ca845541b6b74f8ab43259378p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128 -0x3.ffe6p+12L : 0x3.159ca845541b6b74f8ab43259374p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128 -0x3.ffe6p+12L : 0x3.159ca845541b6b74f8ab43259378p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-128ibm -0x3.ffe6p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 tonearest ldbl-128ibm -0x3.ffe6p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 towardzero ldbl-128ibm -0x3.ffe6p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 upward ldbl-128ibm -0x3.ffe6p+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+exp2 -16382.5
+= exp2 downward flt-32 -0x3.ffe8p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.ffe8p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.ffe8p+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.ffe8p+12f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.ffe8p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 tonearest dbl-64 -0x3.ffe8p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 towardzero dbl-64 -0x3.ffe8p+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 upward dbl-64 -0x3.ffe8p+12 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.ffe8p+12L : 0x2.d413cccfe779921p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-96-intel -0x3.ffe8p+12L : 0x2.d413cccfe779921p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-96-intel -0x3.ffe8p+12L : 0x2.d413cccfe779921p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-96-intel -0x3.ffe8p+12L : 0x2.d413cccfe7799218p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-m68k -0x3.ffe8p+12L : 0x2.d413cccfe779921p-16384L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.ffe8p+12L : 0x2.d413cccfe779921p-16384L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.ffe8p+12L : 0x2.d413cccfe779921p-16384L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.ffe8p+12L : 0x2.d413cccfe7799214p-16384L : inexact-ok
+= exp2 downward ldbl-128 -0x3.ffe8p+12L : 0x2.d413cccfe779921165f626cdd528p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128 -0x3.ffe8p+12L : 0x2.d413cccfe779921165f626cdd52cp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128 -0x3.ffe8p+12L : 0x2.d413cccfe779921165f626cdd528p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128 -0x3.ffe8p+12L : 0x2.d413cccfe779921165f626cdd52cp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-128ibm -0x3.ffe8p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 tonearest ldbl-128ibm -0x3.ffe8p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 towardzero ldbl-128ibm -0x3.ffe8p+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 upward ldbl-128ibm -0x3.ffe8p+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+exp2 -16382.625
+= exp2 downward flt-32 -0x3.ffeap+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.ffeap+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.ffeap+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.ffeap+12f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.ffeap+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 tonearest dbl-64 -0x3.ffeap+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 towardzero dbl-64 -0x3.ffeap+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 upward dbl-64 -0x3.ffeap+12 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-96-intel -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-96-intel -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-96-intel -0x3.ffeap+12L : 0x2.97fb5aa6c544e3bp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-m68k -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a8p-16384L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a8p-16384L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a8p-16384L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.ffeap+12L : 0x2.97fb5aa6c544e3acp-16384L : inexact-ok
+= exp2 downward ldbl-128 -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a872f5fd885c4p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128 -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a872f5fd885c4p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128 -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a872f5fd885c4p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128 -0x3.ffeap+12L : 0x2.97fb5aa6c544e3a872f5fd885c44p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-128ibm -0x3.ffeap+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 tonearest ldbl-128ibm -0x3.ffeap+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 towardzero ldbl-128ibm -0x3.ffeap+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 upward ldbl-128ibm -0x3.ffeap+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+exp2 -16382.75
+= exp2 downward flt-32 -0x3.ffecp+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.ffecp+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.ffecp+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.ffecp+12f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.ffecp+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 tonearest dbl-64 -0x3.ffecp+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 towardzero dbl-64 -0x3.ffecp+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 upward dbl-64 -0x3.ffecp+12 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.ffecp+12L : 0x2.60dfc14636e2a5b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-96-intel -0x3.ffecp+12L : 0x2.60dfc14636e2a5cp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-96-intel -0x3.ffecp+12L : 0x2.60dfc14636e2a5b8p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-96-intel -0x3.ffecp+12L : 0x2.60dfc14636e2a5cp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-m68k -0x3.ffecp+12L : 0x2.60dfc14636e2a5bcp-16384L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.ffecp+12L : 0x2.60dfc14636e2a5bcp-16384L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.ffecp+12L : 0x2.60dfc14636e2a5bcp-16384L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.ffecp+12L : 0x2.60dfc14636e2a5cp-16384L : inexact-ok
+= exp2 downward ldbl-128 -0x3.ffecp+12L : 0x2.60dfc14636e2a5bd1ab48c60b908p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128 -0x3.ffecp+12L : 0x2.60dfc14636e2a5bd1ab48c60b90cp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128 -0x3.ffecp+12L : 0x2.60dfc14636e2a5bd1ab48c60b908p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128 -0x3.ffecp+12L : 0x2.60dfc14636e2a5bd1ab48c60b90cp-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-128ibm -0x3.ffecp+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 tonearest ldbl-128ibm -0x3.ffecp+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 towardzero ldbl-128ibm -0x3.ffecp+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 upward ldbl-128ibm -0x3.ffecp+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
+exp2 -16382.875
+= exp2 downward flt-32 -0x3.ffeep+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 tonearest flt-32 -0x3.ffeep+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 towardzero flt-32 -0x3.ffeep+12f : 0x0p+0f : inexact-ok underflow errno-erange
+= exp2 upward flt-32 -0x3.ffeep+12f : 0x8p-152f : inexact-ok underflow errno-erange-ok
+= exp2 downward dbl-64 -0x3.ffeep+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 tonearest dbl-64 -0x3.ffeep+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 towardzero dbl-64 -0x3.ffeep+12 : 0x0p+0 : inexact-ok underflow errno-erange
+= exp2 upward dbl-64 -0x3.ffeep+12 : 0x4p-1076 : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-intel -0x3.ffeep+12L : 0x2.2e57078faa2f5b98p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-96-intel -0x3.ffeep+12L : 0x2.2e57078faa2f5b98p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-96-intel -0x3.ffeep+12L : 0x2.2e57078faa2f5b98p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-96-intel -0x3.ffeep+12L : 0x2.2e57078faa2f5bap-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-96-m68k -0x3.ffeep+12L : 0x2.2e57078faa2f5b98p-16384L : inexact-ok
+= exp2 tonearest ldbl-96-m68k -0x3.ffeep+12L : 0x2.2e57078faa2f5b9cp-16384L : inexact-ok
+= exp2 towardzero ldbl-96-m68k -0x3.ffeep+12L : 0x2.2e57078faa2f5b98p-16384L : inexact-ok
+= exp2 upward ldbl-96-m68k -0x3.ffeep+12L : 0x2.2e57078faa2f5b9cp-16384L : inexact-ok
+= exp2 downward ldbl-128 -0x3.ffeep+12L : 0x2.2e57078faa2f5b9bef918a1d6294p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 tonearest ldbl-128 -0x3.ffeep+12L : 0x2.2e57078faa2f5b9bef918a1d6294p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 towardzero ldbl-128 -0x3.ffeep+12L : 0x2.2e57078faa2f5b9bef918a1d6294p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 upward ldbl-128 -0x3.ffeep+12L : 0x2.2e57078faa2f5b9bef918a1d6298p-16384L : inexact-ok underflow errno-erange-ok
+= exp2 downward ldbl-128ibm -0x3.ffeep+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 tonearest ldbl-128ibm -0x3.ffeep+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 towardzero ldbl-128ibm -0x3.ffeep+12L : 0x0p+0L : inexact-ok underflow errno-erange
+= exp2 upward ldbl-128ibm -0x3.ffeep+12L : 0x4p-1076L : inexact-ok underflow errno-erange-ok
 exp2 0x1p-10
 = exp2 downward flt-32 0x4p-12f : 0x1.002c6p+0f : inexact-ok
 = exp2 tonearest flt-32 0x4p-12f : 0x1.002c6p+0f : inexact-ok
diff --git a/math/e_exp2l.c b/math/e_exp2l.c
index 8db34ad..b8cd158 100644
--- a/math/e_exp2l.c
+++ b/math/e_exp2l.c
@@ -38,9 +38,17 @@ __ieee754_exp2l (long double x)
 	{
 	  int intx = (int) x;
 	  long double fractx = x - intx;
+	  long double result;
 	  if (fabsl (fractx) < LDBL_EPSILON / 4.0L)
-	    return __scalbnl (1.0L + fractx, intx);
-	  return __scalbnl (__ieee754_expl (M_LN2l * fractx), intx);
+	    result = __scalbnl (1.0L + fractx, intx);
+	  else
+	    result = __scalbnl (__ieee754_expl (M_LN2l * fractx), intx);
+	  if (result < LDBL_MIN)
+	    {
+	      long double force_underflow = result * result;
+	      math_force_eval (force_underflow);
+	    }
+	  return result;
 	}
       else
 	{