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-rw-r--r--sysdeps/i386/fpu/e_expl.S6
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/i386/fpu/e_expl.S b/sysdeps/i386/fpu/e_expl.S
index 74968bb..711c86a 100644
--- a/sysdeps/i386/fpu/e_expl.S
+++ b/sysdeps/i386/fpu/e_expl.S
@@ -122,6 +122,12 @@ ENTRY(IEEE754_EXPL)
normal. */
cmpl $0x0001, %eax
jge 2f
+ /* Force underflow and return the argument, to avoid wrong signs
+ of zero results from the code below in some rounding modes. */
+ fld %st
+ fmul %st
+ fstp %st
+ jmp 2f
#else
movzwl 4+8(%esp), %eax
andl $0x7fff, %eax