diff options
Diffstat (limited to 'lib/msun/src/s_roundf.c')
| -rw-r--r-- | lib/msun/src/s_roundf.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/lib/msun/src/s_roundf.c b/lib/msun/src/s_roundf.c index 952e8e7..e7e2eb9 100644 --- a/lib/msun/src/s_roundf.c +++ b/lib/msun/src/s_roundf.c @@ -27,25 +27,28 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); -#include <math.h> +#include "math.h" +#include "math_private.h" float roundf(float x) { float t; + uint32_t hx; - if (!isfinite(x)) - return (x); + GET_FLOAT_WORD(hx, x); + if ((hx & 0x7fffffff) == 0x7f800000) + return (x + x); - if (x >= 0.0) { + if (!(hx & 0x80000000)) { t = floorf(x); - if (t - x <= -0.5) - t += 1.0; + if (t - x <= -0.5F) + t += 1; return (t); } else { t = floorf(-x); - if (t + x <= -0.5) - t += 1.0; + if (t + x <= -0.5F) + t += 1; return (-t); } } |
