diff options
Diffstat (limited to 'newlib/libm/math/ef_cosh.c')
-rw-r--r-- | newlib/libm/math/ef_cosh.c | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/newlib/libm/math/ef_cosh.c b/newlib/libm/math/ef_cosh.c deleted file mode 100644 index 68e59f8..0000000 --- a/newlib/libm/math/ef_cosh.c +++ /dev/null @@ -1,70 +0,0 @@ -/* ef_cosh.c -- float version of e_cosh.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 __v810__ -#define const -#endif - -#ifdef __STDC__ -static const float one = 1.0, half=0.5, huge = 1.0e30; -#else -static float one = 1.0, half=0.5, huge = 1.0e30; -#endif - -#ifdef __STDC__ - float __ieee754_coshf(float x) -#else - float __ieee754_coshf(x) - float x; -#endif -{ - float t,w; - __int32_t ix; - - GET_FLOAT_WORD(ix,x); - ix &= 0x7fffffff; - - /* x is INF or NaN */ - if(ix>=0x7f800000) return x*x; - - /* |x| in [0,0.5*ln2], return 1+expm1(|x|)^2/(2*exp(|x|)) */ - if(ix<0x3eb17218) { - t = expm1f(fabsf(x)); - w = one+t; - if (ix<0x24000000) return w; /* cosh(tiny) = 1 */ - return one+(t*t)/(w+w); - } - - /* |x| in [0.5*ln2,22], return (exp(|x|)+1/exp(|x|)/2; */ - if (ix < 0x41b00000) { - t = __ieee754_expf(fabsf(x)); - return half*t+half/t; - } - - /* |x| in [22, log(maxdouble)] return half*exp(|x|) */ - if (ix < 0x42b17180) return half*__ieee754_expf(fabsf(x)); - - /* |x| in [log(maxdouble), overflowthresold] */ - if (ix<=0x42b2d4fc) { - w = __ieee754_expf(half*fabsf(x)); - t = half*w; - return t*w; - } - - /* |x| > overflowthresold, cosh(x) overflow */ - return huge*huge; -} |