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Diffstat (limited to 'newlib/libm/common/s_logb.c')
| -rw-r--r-- | newlib/libm/common/s_logb.c | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/newlib/libm/common/s_logb.c b/newlib/libm/common/s_logb.c deleted file mode 100644 index dbddd1994..000000000 --- a/newlib/libm/common/s_logb.c +++ /dev/null @@ -1,42 +0,0 @@ - -/* @(#)s_logb.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. - * ==================================================== - */ - -/* - * double logb(x) - * IEEE 754 logb. Included to pass IEEE test suite. Not recommend. - * Use ilogb instead. - */ - -#include "fdlibm.h" - -#ifndef _DOUBLE_IS_32BITS - -#ifdef __STDC__ - double logb(double x) -#else - double logb(x) - double x; -#endif -{ - __int32_t lx,ix; - EXTRACT_WORDS(ix,lx,x); - ix &= 0x7fffffff; /* high |x| */ - if((ix|lx)==0) return -1.0/fabs(x); - if(ix>=0x7ff00000) return x*x; - if((ix>>=20)==0) /* IEEE 754 logb */ - return -1022.0; - else - return (double) (ix-1023); -} - -#endif /* _DOUBLE_IS_32BITS */ |