diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/s_scalblnf.c')
| -rw-r--r-- | sysdeps/ieee754/flt-32/s_scalblnf.c | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/sysdeps/ieee754/flt-32/s_scalblnf.c b/sysdeps/ieee754/flt-32/s_scalblnf.c deleted file mode 100644 index ad3c586b33..0000000000 --- a/sysdeps/ieee754/flt-32/s_scalblnf.c +++ /dev/null @@ -1,52 +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 <math.h> -#include <math_private.h> - -static const float -two25 = 3.355443200e+07, /* 0x4c000000 */ -twom25 = 2.9802322388e-08, /* 0x33000000 */ -huge = 1.0e+30, -tiny = 1.0e-30; - -float -__scalblnf (float x, long int n) -{ - int32_t k,ix; - GET_FLOAT_WORD(ix,x); - k = (ix&0x7f800000)>>23; /* extract exponent */ - if (__builtin_expect(k==0, 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 (__builtin_expect(k==0xff, 0)) return x+x; /* NaN or Inf */ - if (__builtin_expect(n< -50000, 0)) - return tiny*copysignf(tiny,x); /*underflow*/ - if (__builtin_expect(n> 50000 || k+n > 0xfe, 0)) - return huge*copysignf(huge,x); /* overflow */ - /* Now k and n are bounded we know that k = k+n does not - overflow. */ - k = k+n; - if (__builtin_expect(k > 0, 1)) /* 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; -} |