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Diffstat (limited to 'math/w_jnl.c')
| -rw-r--r-- | math/w_jnl.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/math/w_jnl.c b/math/w_jnl.c deleted file mode 100644 index 866e3cdb00..0000000000 --- a/math/w_jnl.c +++ /dev/null @@ -1,96 +0,0 @@ -/* w_jnl.c -- long double version of w_jn.c. - * Conversion to long double by Ulrich Drepper, - * Cygnus Support, drepper@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. - * ==================================================== - */ - -#if defined(LIBM_SCCS) && !defined(lint) -static char rcsid[] = "$NetBSD: $"; -#endif - -/* - * wrapper jn(int n, double x), yn(int n, double x) - * floating point Bessel's function of the 1st and 2nd kind - * of order n - * - * Special cases: - * y0(0)=y1(0)=yn(n,0) = -inf with division by zero signal; - * y0(-ve)=y1(-ve)=yn(n,-ve) are NaN with invalid signal. - * Note 2. About jn(n,x), yn(n,x) - * For n=0, j0(x) is called, - * for n=1, j1(x) is called, - * for n<x, forward recursion us used starting - * from values of j0(x) and j1(x). - * for n>x, a continued fraction approximation to - * j(n,x)/j(n-1,x) is evaluated and then backward - * recursion is used starting from a supposed value - * for j(n,x). The resulting value of j(0,x) is - * compared with the actual value to correct the - * supposed value of j(n,x). - * - * yn(n,x) is similar in all respects, except - * that forward recursion is used for all - * values of n>1. - * - */ - -#include "math.h" -#include "math_private.h" - -#ifdef __STDC__ - long double jnl(int n, long double x) /* wrapper jnl */ -#else - long double jnl(n,x) /* wrapper jnl */ - long double x; int n; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_jnl(n,x); -#else - long double z; - z = __ieee754_jnl(n,x); - if(_LIB_VERSION == _IEEE_ || __isnanl(x) ) return z; - if(fabsl(x)>X_TLOSS) { - return __kernel_standard((double)n,x,238); /* jn(|x|>X_TLOSS,n) */ - } else - return z; -#endif -} - -#ifdef __STDC__ - long double ynl(int n, long double x) /* wrapper ynl */ -#else - long double ynl(n,x) /* wrapper ynl */ - long double x; int n; -#endif -{ -#ifdef _IEEE_LIBM - return __ieee754_ynl(n,x); -#else - long double z; - z = __ieee754_ynl(n,x); - if(_LIB_VERSION == _IEEE_ || __isnanl(x) ) return z; - if(x <= 0.0){ - if(x==0.0) - /* d= -one/(x-x); */ - return __kernel_standard((double)n,x,212); - else - /* d = zero/(x-x); */ - return __kernel_standard((double)n,x,213); - } - if(x>X_TLOSS) { - return __kernel_standard((double)n,x,239); /* yn(x>X_TLOSS,n) */ - } else - return z; -#endif -} |