math: fix x86_64 and x32 asm not to use sahf instruction

[musl] / src / math / x86_64 / fmodl.s

diff --git a/src/math/x86_64/fmodl.s b/src/math/x86_64/fmodl.s
index ca81e60..cd8d2b7 100644 (file)
--- a/src/math/x86_64/fmodl.s
+++ b/src/math/x86_64/fmodl.s
@@ -5,7 +5,7 @@ fmodl:
        fldt 8(%rsp)
 1:     fprem
        fstsw %ax
-       sahf
-       jp 1b
+       testb $4,%ah
+       jnz 1b
        fstp %st(1)
        ret