diff options
Diffstat (limited to 'newlib/libm/common/sf_scalbln.c')
-rw-r--r-- | newlib/libm/common/sf_scalbln.c | 71 |
1 files changed, 0 insertions, 71 deletions
diff --git a/newlib/libm/common/sf_scalbln.c b/newlib/libm/common/sf_scalbln.c deleted file mode 100644 index dd4baf56a..000000000 --- a/newlib/libm/common/sf_scalbln.c +++ /dev/null @@ -1,71 +0,0 @@ -/* s_scalbnf.c -- float version of s_scalbn.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. - * ==================================================== - */ - -#include "fdlibm.h" - -#ifdef __STDC__ -static const float -#else -static float -#endif -two25 = 3.355443200e+07, /* 0x4c000000 */ -twom25 = 2.9802322388e-08, /* 0x33000000 */ -huge = 1.0e+30, -tiny = 1.0e-30; - -#ifdef __STDC__ - float scalblnf (float x, long int n) -#else - float scalblnf (x,n) - float x; long int n; -#endif -{ - __int32_t k,ix; - GET_FLOAT_WORD(ix,x); - k = (ix&0x7f800000)>>23; /* extract exponent */ - if (k==0) { /* 0 or subnormal x */ - if ((ix&0x7fffffff)==0) return x; /* +-0 */ - x *= two25; - GET_FLOAT_WORD(ix,x); - k = ((ix&0x7f800000)>>23) - 25; - } - if (k==0xff) return x+x; /* NaN or Inf */ - k = k+n; - if (n> 50000 || k > 0xfe) - return huge*copysignf(huge,x); /* overflow */ - if (n< -50000) - return tiny*copysignf(tiny,x); /*underflow*/ - if (k > 0) /* normal result */ - {SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); return x;} - if (k <= -25) - return tiny*copysignf(tiny,x); /*underflow*/ - k += 25; /* subnormal result */ - SET_FLOAT_WORD(x,(ix&0x807fffff)|(k<<23)); - return x*twom25; -} - -#ifdef _DOUBLE_IS_32BITS - -#ifdef __STDC__ - double scalbln (double x, long int n) -#else - double scalbln (x,n) - double x; long int n; -#endif -{ - return (double) scalblnf((float) x, n); -} - -#endif /* defined(_DOUBLE_IS_32BITS) */ |