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| author | Christopher Faylor <me@cgf.cx> | 2000-02-17 19:39:52 +0000 |
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| committer | Christopher Faylor <me@cgf.cx> | 2000-02-17 19:39:52 +0000 |
| commit | 8a0efa53e44919bcf5ccb1d3353618a82afdf8bc (patch) | |
| tree | 68c3dbf3f2c6fd5d49777def9914d77b5cd4589d /newlib/libm/math/s_signif.c | |
| parent | 1fd5e000ace55b323124c7e556a7a864b972a5c4 (diff) | |
| download | cygnal-8a0efa53e44919bcf5ccb1d3353618a82afdf8bc.tar.gz cygnal-8a0efa53e44919bcf5ccb1d3353618a82afdf8bc.tar.bz2 cygnal-8a0efa53e44919bcf5ccb1d3353618a82afdf8bc.zip | |
import newlib-2000-02-17 snapshot
Diffstat (limited to 'newlib/libm/math/s_signif.c')
| -rw-r--r-- | newlib/libm/math/s_signif.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/newlib/libm/math/s_signif.c b/newlib/libm/math/s_signif.c new file mode 100644 index 000000000..f68046bdc --- /dev/null +++ b/newlib/libm/math/s_signif.c @@ -0,0 +1,34 @@ + +/* @(#)s_signif.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. + * ==================================================== + */ + +/* + * significand(x) computes just + * scalb(x, (double) -ilogb(x)), + * for exercising the fraction-part(F) IEEE 754-1985 test vector. + */ + +#include "fdlibm.h" + +#ifndef _DOUBLE_IS_32BITS + +#ifdef __STDC__ + double significand(double x) +#else + double significand(x) + double x; +#endif +{ + return __ieee754_scalb(x,(double) -ilogb(x)); +} + +#endif /* _DOUBLE_IS_32BITS */ |