diff options
| author | ProjectRevoTPP <projectrevotpp@hotmail.com> | 2017-12-20 16:34:35 -0500 |
|---|---|---|
| committer | ProjectRevoTPP <projectrevotpp@hotmail.com> | 2017-12-20 16:34:35 -0500 |
| commit | 48ef7704c03e7e554c05de01bf8d1d70c16cb6f4 (patch) | |
| tree | 34d52513de6c903b4f52ef87d885c73472daf469 /libc/math/sf_finite.c | |
| parent | f49e7cbb33e6e27b0ce5eb35244d7241c800a7c1 (diff) | |
add libc building to agbcc.
Diffstat (limited to 'libc/math/sf_finite.c')
| -rw-r--r-- | libc/math/sf_finite.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/libc/math/sf_finite.c b/libc/math/sf_finite.c new file mode 100644 index 0000000..4c48f40 --- /dev/null +++ b/libc/math/sf_finite.c @@ -0,0 +1,47 @@ +/* sf_finite.c -- float version of s_finite.c. + * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. + */ + +/* + * ==================================================== + * 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. + * ==================================================== + */ + +/* + * finitef(x) returns 1 is x is finite, else 0; + * no branching! + */ + +#include "fdlibm.h" + +#ifdef __STDC__ + int finitef(float x) +#else + int finitef(x) + float x; +#endif +{ + __int32_t ix; + GET_FLOAT_WORD(ix,x); + return (int)((__uint32_t)((ix&0x7fffffff)-0x7f800000)>>31); +} + +#ifdef _DOUBLE_IS_32BITS + +#ifdef __STDC__ + int finite(double x) +#else + int finite(x) + double x; +#endif +{ + return finitef((float) x); +} + +#endif /* defined(_DOUBLE_IS_32BITS) */ |