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Diffstat (limited to 'sysdeps/i386/fpu/e_scalbl.S')
-rw-r--r--sysdeps/i386/fpu/e_scalbl.S10
1 files changed, 9 insertions, 1 deletions
diff --git a/sysdeps/i386/fpu/e_scalbl.S b/sysdeps/i386/fpu/e_scalbl.S
index e8166fa9d5..65644f8f0e 100644
--- a/sysdeps/i386/fpu/e_scalbl.S
+++ b/sysdeps/i386/fpu/e_scalbl.S
@@ -58,7 +58,7 @@ ENTRY(__ieee754_scalbl)
fcomp %st(2)
fnstsw
sahf
- jne 2f
+ jne 4f
fscale
fstp %st(1)
ret
@@ -77,6 +77,7 @@ ENTRY(__ieee754_scalbl)
fstp %st
andl $0x8000, %edx
andl $8, %eax
+ jnz 4f
shrl $11, %edx
addl %edx, %eax
fldl MOX(zero_nan, %eax, 1)
@@ -97,4 +98,11 @@ ENTRY(__ieee754_scalbl)
/* The first parameter is a NaN. Return it. */
3: fstp %st(1)
ret
+
+ /* Return NaN and raise the invalid exception. */
+4: fstp %st
+ fstp %st
+ fldz
+ fdiv %st
+ ret
END(__ieee754_scalbl)