diff options
Diffstat (limited to 'newlib/libm/mathfp/ef_atanh.c')
-rw-r--r-- | newlib/libm/mathfp/ef_atanh.c | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/newlib/libm/mathfp/ef_atanh.c b/newlib/libm/mathfp/ef_atanh.c deleted file mode 100644 index bfc40de..0000000 --- a/newlib/libm/mathfp/ef_atanh.c +++ /dev/null @@ -1,54 +0,0 @@ -/* ef_atanh.c -- float version of e_atanh.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 one = 1.0, huge = 1e30; -#else -static float one = 1.0, huge = 1e30; -#endif - -#ifdef __STDC__ -static const float zero = 0.0; -#else -static float zero = 0.0; -#endif - -#ifdef __STDC__ - float atanhf(float x) -#else - float atanhf(x) - float x; -#endif -{ - float t; - __int32_t hx,ix; - GET_FLOAT_WORD(hx,x); - ix = hx&0x7fffffff; - if (ix>0x3f800000) /* |x|>1 */ - return (x-x)/(x-x); - if(ix==0x3f800000) - return x/zero; - if(ix<0x31800000&&(huge+x)>zero) return x; /* x<2**-28 */ - SET_FLOAT_WORD(x,ix); - if(ix<0x3f000000) { /* x < 0.5 */ - t = x+x; - t = (float)0.5*log1pf(t+t*x/(one-x)); - } else - t = (float)0.5*log1pf((x+x)/(one-x)); - if(hx>=0) return t; else return -t; -} |