diff options
Diffstat (limited to '05/musl-0.6.0/src/math/__fpclassifyf.c')
-rw-r--r-- | 05/musl-0.6.0/src/math/__fpclassifyf.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/05/musl-0.6.0/src/math/__fpclassifyf.c b/05/musl-0.6.0/src/math/__fpclassifyf.c new file mode 100644 index 0000000..bf59d0d --- /dev/null +++ b/05/musl-0.6.0/src/math/__fpclassifyf.c @@ -0,0 +1,14 @@ +#include <stdint.h> +#include <math.h> + +int __fpclassifyf(float __x) +{ + union { + float __f; + __uint32_t __i; + } __y = { __x }; + int __ee = __y.__i>>23 & 0xff; + if (!__ee) return __y.__i<<1 ? FP_SUBNORMAL : FP_ZERO; + if (__ee==0xff) return __y.__i<<9 ? FP_NAN : FP_INFINITE; + return FP_NORMAL; +} |