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Diffstat (limited to 'newlib/libm/common/sf_finite.c')
| -rw-r--r-- | newlib/libm/common/sf_finite.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/newlib/libm/common/sf_finite.c b/newlib/libm/common/sf_finite.c new file mode 100644 index 00000000000..4c48f400fdf --- /dev/null +++ b/newlib/libm/common/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) */ |