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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libm/] [math/] [wf_jn.c] - Rev 158
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/* wf_jn.c -- float version of w_jn.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" #include <errno.h> #ifdef __STDC__ float jnf(int n, float x) /* wrapper jnf */ #else float jnf(n,x) /* wrapper jnf */ float x; int n; #endif { #ifdef _IEEE_LIBM return __ieee754_jnf(n,x); #else float z; struct exception exc; z = __ieee754_jnf(n,x); if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z; if(fabsf(x)>(float)X_TLOSS) { /* jnf(|x|>X_TLOSS) */ exc.type = TLOSS; exc.name = "jnf"; exc.err = 0; exc.arg1 = (double)n; exc.arg2 = (double)x; exc.retval = 0.0; if (_LIB_VERSION == _POSIX_) errno = ERANGE; else if (!matherr(&exc)) { errno = ERANGE; } if (exc.err != 0) errno = exc.err; return exc.retval; } else return z; #endif } #ifdef __STDC__ float ynf(int n, float x) /* wrapper ynf */ #else float ynf(n,x) /* wrapper ynf */ float x; int n; #endif { #ifdef _IEEE_LIBM return __ieee754_ynf(n,x); #else float z; struct exception exc; z = __ieee754_ynf(n,x); if(_LIB_VERSION == _IEEE_ || isnanf(x) ) return z; if(x <= (float)0.0){ /* ynf(n,0) = -inf or ynf(x<0) = NaN */ #ifndef HUGE_VAL #define HUGE_VAL inf double inf = 0.0; SET_HIGH_WORD(inf,0x7ff00000); /* set inf to infinite */ #endif exc.type = DOMAIN; /* should be SING for IEEE */ exc.name = "ynf"; exc.err = 0; exc.arg1 = (double)n; exc.arg2 = (double)x; if (_LIB_VERSION == _SVID_) exc.retval = -HUGE; else exc.retval = -HUGE_VAL; if (_LIB_VERSION == _POSIX_) errno = EDOM; else if (!matherr(&exc)) { errno = EDOM; } if (exc.err != 0) errno = exc.err; return (float)exc.retval; } if(x>(float)X_TLOSS) { /* ynf(x>X_TLOSS) */ exc.type = TLOSS; exc.name = "ynf"; exc.err = 0; exc.arg1 = (double)n; exc.arg2 = (double)x; exc.retval = 0.0; if (_LIB_VERSION == _POSIX_) errno = ERANGE; else if (!matherr(&exc)) { errno = ERANGE; } if (exc.err != 0) errno = exc.err; return (float)exc.retval; } else return z; #endif } #ifdef _DOUBLE_IS_32BITS #ifdef __STDC__ double jn(int n, double x) #else double jn(n,x) double x; int n; #endif { return (double) jnf(n, (float) x); } #ifdef __STDC__ double yn(int n, double x) #else double yn(n,x) double x; int n; #endif { return (double) ynf(n, (float) x); } #endif /* defined(_DOUBLE_IS_32BITS) */
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