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| author | Elliott Hughes <enh@google.com> | 2014-10-10 10:21:43 -0700 |
|---|---|---|
| committer | Elliott Hughes <enh@google.com> | 2014-10-10 10:21:43 -0700 |
| commit | 14538ca75ef3d0edc8fb86e332d79a4913238cb6 (patch) | |
| tree | fc02d348aa55a1a9191d4edd9619583ee742b5bb /libm/upstream-freebsd/lib/msun/src/s_roundf.c | |
| parent | 8dd3b65f2dd63df1baa83285f607cf110f21c27c (diff) | |
| download | bionic-14538ca75ef3d0edc8fb86e332d79a4913238cb6.zip bionic-14538ca75ef3d0edc8fb86e332d79a4913238cb6.tar.gz bionic-14538ca75ef3d0edc8fb86e332d79a4913238cb6.tar.bz2 | |
Catch up on upstream's round/roundf/roundl.
Not sure how we missed these, but better late than never...
Change-Id: Ib08d1bb6e340a1907cbeb1cbe220e33f70642bdc
Diffstat (limited to 'libm/upstream-freebsd/lib/msun/src/s_roundf.c')
| -rw-r--r-- | libm/upstream-freebsd/lib/msun/src/s_roundf.c | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/libm/upstream-freebsd/lib/msun/src/s_roundf.c b/libm/upstream-freebsd/lib/msun/src/s_roundf.c index 952e8e7..e7e2eb9 100644 --- a/libm/upstream-freebsd/lib/msun/src/s_roundf.c +++ b/libm/upstream-freebsd/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); } } |