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Diffstat (limited to 'newlib/libm/mathfp/s_signif.c')
| -rw-r--r-- | newlib/libm/mathfp/s_signif.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/newlib/libm/mathfp/s_signif.c b/newlib/libm/mathfp/s_signif.c new file mode 100644 index 0000000..76b5f7c --- /dev/null +++ b/newlib/libm/mathfp/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 scalb(x,(double) -ilogb(x)); +} + +#endif /* _DOUBLE_IS_32BITS */ |