diff options
Diffstat (limited to 'winsup/mingw/mingwex/signbitf.c')
-rw-r--r-- | winsup/mingw/mingwex/signbitf.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/winsup/mingw/mingwex/signbitf.c b/winsup/mingw/mingwex/signbitf.c new file mode 100644 index 000000000..5bbf675ad --- /dev/null +++ b/winsup/mingw/mingwex/signbitf.c @@ -0,0 +1,10 @@ +#define __FP_SIGNBIT 0x0200 + +int __signbitf (float x) { + unsigned short sw; + __asm__ ("fxam; fstsw %%ax;" + : "=a" (sw) + : "t" (x) ); + return sw & __FP_SIGNBIT; +} +int __attribute__ ((alias ("__signbitf"))) signbitf (float); |