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| author | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2018-05-29 17:52:24 -0300 |
|---|---|---|
| committer | Paul E. Murphy <murphyp@linux.vnet.ibm.com> | 2020-02-14 08:24:56 -0600 |
| commit | c624d23260d5c136bebdd3a0734876527cedc505 (patch) | |
| tree | c3b9039f6ef2e62892420a9b147668fc8924d759 /sysdeps/ieee754 | |
| parent | ad180676b83dc1782d407dbff57dabbaab0c1f71 (diff) | |
| download | glibc-c624d23260d5c136bebdd3a0734876527cedc505.zip glibc-c624d23260d5c136bebdd3a0734876527cedc505.tar.gz glibc-c624d23260d5c136bebdd3a0734876527cedc505.tar.bz2 | |
Add a generic scalb implementation
This is a preparatory patch to enable building a _Float128
variant to ease reuse when building a _Float128 variant to
alias this long double only symbol.
Notably, stubs are added where missing to the native _Float128
sysdep dir to prevent building these newly templated variants
created inside the build directories.
Also noteworthy are the changes around LIBM_SVID_COMPAT. These
changes are not intuitive. The templated version is only
enabled when !LIBM_SVID_COMPAT, and the compat version is
predicated entirely on LIBM_SVID_COMPAT. Thus, exactly one is
stubbed out entirely when building. The nldbl scalb compat
files are updated to account for this.
Likewise, fixup the reuse of m68k's e_scalb{f,l}.c to include
it's override of e_scalb.c. Otherwise, the search path finds
the templated copy in the build directory. This could be
futher simplified by providing an overridden template, but I
lack the hardware to verify.
Diffstat (limited to 'sysdeps/ieee754')
| -rw-r--r-- | sysdeps/ieee754/float128/w_scalbf128.c | 1 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-opt/w_scalb_compat.c | 4 | ||||
| -rw-r--r-- | sysdeps/ieee754/ldbl-opt/w_scalbl_compat.c | 2 |
3 files changed, 6 insertions, 1 deletions
diff --git a/sysdeps/ieee754/float128/w_scalbf128.c b/sysdeps/ieee754/float128/w_scalbf128.c new file mode 100644 index 0000000..067b724 --- /dev/null +++ b/sysdeps/ieee754/float128/w_scalbf128.c @@ -0,0 +1 @@ +/* Not defined for _FloatN types. */ diff --git a/sysdeps/ieee754/ldbl-opt/w_scalb_compat.c b/sysdeps/ieee754/ldbl-opt/w_scalb_compat.c index f6d53a5..56735e8 100644 --- a/sysdeps/ieee754/ldbl-opt/w_scalb_compat.c +++ b/sysdeps/ieee754/ldbl-opt/w_scalb_compat.c @@ -1,5 +1,7 @@ #include <math_ldbl_opt.h> #include <math/w_scalb_compat.c> -#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) +#if LIBM_SVID_COMPAT +# if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0) compat_symbol (libm, __scalb, scalbl, GLIBC_2_0); +# endif #endif diff --git a/sysdeps/ieee754/ldbl-opt/w_scalbl_compat.c b/sysdeps/ieee754/ldbl-opt/w_scalbl_compat.c index c8feb65..4d16f41 100644 --- a/sysdeps/ieee754/ldbl-opt/w_scalbl_compat.c +++ b/sysdeps/ieee754/ldbl-opt/w_scalbl_compat.c @@ -2,4 +2,6 @@ #undef weak_alias #define weak_alias(n,a) #include <math/w_scalbl_compat.c> +#if LIBM_SVID_COMPAT long_double_symbol (libm, __scalbl, scalbl); +#endif |