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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 13:54:38 +0000 |
| commit | 8c1ab65c0f548d20b7f177bdb736daaf603340e1 (patch) | |
| tree | df55b7e75bf43f2bf500845b105afe3ac3a5157e /libc-top-half/musl/src/math/rintf.c | |
| parent | Initial commit. (diff) | |
| download | wasi-libc-8c1ab65c0f548d20b7f177bdb736daaf603340e1.tar.xz wasi-libc-8c1ab65c0f548d20b7f177bdb736daaf603340e1.zip | |
Adding upstream version 0.0~git20221206.8b7148f.upstream/0.0_git20221206.8b7148f
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libc-top-half/musl/src/math/rintf.c')
| -rw-r--r-- | libc-top-half/musl/src/math/rintf.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/math/rintf.c b/libc-top-half/musl/src/math/rintf.c new file mode 100644 index 0000000..9047688 --- /dev/null +++ b/libc-top-half/musl/src/math/rintf.c @@ -0,0 +1,30 @@ +#include <float.h> +#include <math.h> +#include <stdint.h> + +#if FLT_EVAL_METHOD==0 +#define EPS FLT_EPSILON +#elif FLT_EVAL_METHOD==1 +#define EPS DBL_EPSILON +#elif FLT_EVAL_METHOD==2 +#define EPS LDBL_EPSILON +#endif +static const float_t toint = 1/EPS; + +float rintf(float x) +{ + union {float f; uint32_t i;} u = {x}; + int e = u.i>>23 & 0xff; + int s = u.i>>31; + float_t y; + + if (e >= 0x7f+23) + return x; + if (s) + y = x - toint + toint; + else + y = x + toint - toint; + if (y == 0) + return s ? -0.0f : 0.0f; + return y; +} |