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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/lrintl.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/lrintl.c')
| -rw-r--r-- | libc-top-half/musl/src/math/lrintl.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/math/lrintl.c b/libc-top-half/musl/src/math/lrintl.c new file mode 100644 index 0000000..b2a8106 --- /dev/null +++ b/libc-top-half/musl/src/math/lrintl.c @@ -0,0 +1,36 @@ +#include <limits.h> +#include <fenv.h> +#include "libm.h" + + +#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024 +long lrintl(long double x) +{ + return lrint(x); +} +#elif defined(FE_INEXACT) +/* +see comments in lrint.c + +Note that if LONG_MAX == 0x7fffffffffffffff && LDBL_MANT_DIG == 64 +then x == 2**63 - 0.5 is the only input that overflows and +raises inexact (with tonearest or upward rounding mode) +*/ +long lrintl(long double x) +{ + #pragma STDC FENV_ACCESS ON + int e; + + e = fetestexcept(FE_INEXACT); + x = rintl(x); + if (!e && (x > LONG_MAX || x < LONG_MIN)) + feclearexcept(FE_INEXACT); + /* conversion */ + return x; +} +#else +long lrintl(long double x) +{ + return rintl(x); +} +#endif |