From 7ce331c01ce6eb7b3f5c715a38a24359da9c6ee2 Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Thu, 22 Nov 2001 14:04:29 +0000 Subject: Totally rework the math library, this time based on the MacOs X math library (which is itself based on the math lib from FreeBSD). -Erik --- libm/ldouble/coshl.c | 89 ---------------------------------------------------- 1 file changed, 89 deletions(-) delete mode 100644 libm/ldouble/coshl.c (limited to 'libm/ldouble/coshl.c') diff --git a/libm/ldouble/coshl.c b/libm/ldouble/coshl.c deleted file mode 100644 index 46212ae44..000000000 --- a/libm/ldouble/coshl.c +++ /dev/null @@ -1,89 +0,0 @@ -/* coshl.c - * - * Hyperbolic cosine, long double precision - * - * - * - * SYNOPSIS: - * - * long double x, y, coshl(); - * - * y = coshl( x ); - * - * - * - * DESCRIPTION: - * - * Returns hyperbolic cosine of argument in the range MINLOGL to - * MAXLOGL. - * - * cosh(x) = ( exp(x) + exp(-x) )/2. - * - * - * - * ACCURACY: - * - * Relative error: - * arithmetic domain # trials peak rms - * IEEE +-10000 30000 1.1e-19 2.8e-20 - * - * - * ERROR MESSAGES: - * - * message condition value returned - * cosh overflow |x| > MAXLOGL+LOGE2L INFINITYL - * - * - */ - - -/* -Cephes Math Library Release 2.7: May, 1998 -Copyright 1985, 1991, 1998 by Stephen L. Moshier -*/ - -#include -extern long double MAXLOGL, MAXNUML, LOGE2L; -#ifdef ANSIPROT -extern long double expl ( long double ); -extern int isnanl ( long double ); -#else -long double expl(), isnanl(); -#endif -#ifdef INFINITIES -extern long double INFINITYL; -#endif -#ifdef NANS -extern long double NANL; -#endif - -long double coshl(x) -long double x; -{ -long double y; - -#ifdef NANS -if( isnanl(x) ) - return(x); -#endif -if( x < 0 ) - x = -x; -if( x > (MAXLOGL + LOGE2L) ) - { - mtherr( "coshl", OVERFLOW ); -#ifdef INFINITIES - return( INFINITYL ); -#else - return( MAXNUML ); -#endif - } -if( x >= (MAXLOGL - LOGE2L) ) - { - y = expl(0.5L * x); - y = (0.5L * y) * y; - return(y); - } -y = expl(x); -y = 0.5L * (y + 1.0L / y); -return( y ); -} -- cgit v1.2.3