diff options
Diffstat (limited to 'libc-top-half/musl/src/math/__fpclassifyf.c')
-rw-r--r-- | libc-top-half/musl/src/math/__fpclassifyf.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/math/__fpclassifyf.c b/libc-top-half/musl/src/math/__fpclassifyf.c new file mode 100644 index 0000000..fd00eb1 --- /dev/null +++ b/libc-top-half/musl/src/math/__fpclassifyf.c @@ -0,0 +1,11 @@ +#include <math.h> +#include <stdint.h> + +int __fpclassifyf(float x) +{ + union {float f; uint32_t i;} u = {x}; + int e = u.i>>23 & 0xff; + if (!e) return u.i<<1 ? FP_SUBNORMAL : FP_ZERO; + if (e==0xff) return u.i<<9 ? FP_NAN : FP_INFINITE; + return FP_NORMAL; +} |