diff options
Diffstat (limited to 'sysdeps/ieee754/flt-32/e_log10f.c')
| -rw-r--r-- | sysdeps/ieee754/flt-32/e_log10f.c | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/sysdeps/ieee754/flt-32/e_log10f.c b/sysdeps/ieee754/flt-32/e_log10f.c deleted file mode 100644 index aa21bbc9c5..0000000000 --- a/sysdeps/ieee754/flt-32/e_log10f.c +++ /dev/null @@ -1,54 +0,0 @@ -/* e_log10f.c -- float version of e_log10.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> -#include <fix-int-fp-convert-zero.h> - -static const float -two25 = 3.3554432000e+07, /* 0x4c000000 */ -ivln10 = 4.3429449201e-01, /* 0x3ede5bd9 */ -log10_2hi = 3.0102920532e-01, /* 0x3e9a2080 */ -log10_2lo = 7.9034151668e-07; /* 0x355427db */ - -float -__ieee754_log10f(float x) -{ - float y,z; - int32_t i,k,hx; - - GET_FLOAT_WORD(hx,x); - - k=0; - if (hx < 0x00800000) { /* x < 2**-126 */ - if (__builtin_expect((hx&0x7fffffff)==0, 0)) - return -two25/__fabsf (x); /* log(+-0)=-inf */ - if (__builtin_expect(hx<0, 0)) - return (x-x)/(x-x); /* log(-#) = NaN */ - k -= 25; x *= two25; /* subnormal number, scale up x */ - GET_FLOAT_WORD(hx,x); - } - if (__builtin_expect(hx >= 0x7f800000, 0)) return x+x; - k += (hx>>23)-127; - i = ((u_int32_t)k&0x80000000)>>31; - hx = (hx&0x007fffff)|((0x7f-i)<<23); - y = (float)(k+i); - if (FIX_INT_FP_CONVERT_ZERO && y == 0.0f) - y = 0.0f; - SET_FLOAT_WORD(x,hx); - z = y*log10_2lo + ivln10*__ieee754_logf(x); - return z+y*log10_2hi; -} -strong_alias (__ieee754_log10f, __log10f_finite) |