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| author | Marcus Huderle <huderlem@gmail.com> | 2017-12-27 16:22:00 -0600 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-12-27 16:22:00 -0600 |
| commit | 6b611a3046a694d3972f2aa4df90d3ef78801217 (patch) | |
| tree | 05f295c00cbbc1d5987a05da37e746fb841d4d83 /libc/math/s_finite.c | |
| parent | 58c860d6c48324eba66dd19540db5584d832cf58 (diff) | |
| parent | d88495e3f4061a411e654c7307aa94ac8a98c94b (diff) | |
Merge pull request #13 from ProjectRevoTPP/libc
add libc building to agbcc.
Diffstat (limited to 'libc/math/s_finite.c')
| -rw-r--r-- | libc/math/s_finite.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/libc/math/s_finite.c b/libc/math/s_finite.c new file mode 100644 index 0000000..17f4e84 --- /dev/null +++ b/libc/math/s_finite.c @@ -0,0 +1,35 @@ + +/* @(#)s_finite.c 5.1 93/09/24 */ +/* + * ==================================================== + * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. + * + * Developed at SunPro, a Sun Microsystems, Inc. business. + * Permission to use, copy, modify, and distribute this + * software is freely granted, provided that this notice + * is preserved. + * ==================================================== + */ + +/* + * finite(x) returns 1 is x is finite, else 0; + * no branching! + */ + +#include "fdlibm.h" + +#ifndef _DOUBLE_IS_32BITS + +#ifdef __STDC__ + int finite(double x) +#else + int finite(x) + double x; +#endif +{ + __int32_t hx; + GET_HIGH_WORD(hx,x); + return (int)((__uint32_t)((hx&0x7fffffff)-0x7ff00000)>>31); +} + +#endif /* _DOUBLE_IS_32BITS */ |