Revert r336497 for now, as it breaks on architectures using gcc, with:
cc1: warnings being treated as errors /usr/src/lib/msun/src/s_cpow.c: In function 'cpow': /usr/src/lib/msun/src/s_cpow.c:63: warning: implicit declaration of function 'CMPLX'
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@ -56,6 +56,7 @@ COMMON_SRCS= b_exp.c b_log.c b_tgamma.c \
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imprecise.c \
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k_cos.c k_cosf.c k_exp.c k_expf.c k_rem_pio2.c k_sin.c k_sinf.c \
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k_tan.c k_tanf.c \
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polevll.c \
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s_asinh.c s_asinhf.c s_atan.c s_atanf.c s_carg.c s_cargf.c s_cargl.c \
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s_cbrt.c s_cbrtf.c s_ceil.c s_ceilf.c s_clog.c s_clogf.c \
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s_copysign.c s_copysignf.c s_cos.c s_cosf.c \
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@ -14,52 +14,6 @@
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <math.h>
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#include "math_private.h"
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/*
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* Polynomial evaluator:
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* P[0] x^n + P[1] x^(n-1) + ... + P[n]
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*/
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static inline long double
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__polevll(long double x, long double *PP, int n)
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{
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long double y;
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long double *P;
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P = PP;
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y = *P++;
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do {
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y = y * x + *P++;
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} while (--n);
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return (y);
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}
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/*
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* Polynomial evaluator:
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* x^n + P[0] x^(n-1) + P[1] x^(n-2) + ... + P[n]
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*/
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static inline long double
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__p1evll(long double x, long double *PP, int n)
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{
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long double y;
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long double *P;
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P = PP;
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n -= 1;
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y = x + *P++;
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do {
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y = y * x + *P++;
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} while (--n);
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return (y);
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}
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/* powl.c
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*
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* Power function, long double precision
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@ -513,7 +467,7 @@ return( z );
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/* Find a multiple of 1/NXT that is within 1/NXT of x. */
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static inline long double
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static long double
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reducl(long double x)
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{
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long double t;
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@ -180,9 +180,16 @@ If 0**0 = 1, then
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then \*(Na**0 = 1 too because x**0 = 1 for all finite
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and infinite x, i.e., independently of x.
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.El
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.Sh BUGS
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To conform with newer C/C++ standards, a stub implementation for
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.Nm powl
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was committed to the math library, where
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.Nm powl
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is mapped to
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.Nm pow .
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Thus, the numerical accuracy is at most that of the 53-bit double
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precision implementation.
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.Sh SEE ALSO
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.Xr clog 3
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.Xr cpow 3
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.Xr fenv 3 ,
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.Xr ldexp 3 ,
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.Xr log 3 ,
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@ -846,4 +846,7 @@ long double __kernel_sinl(long double, long double, int);
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long double __kernel_cosl(long double, long double);
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long double __kernel_tanl(long double, long double, int);
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long double __p1evll(long double, void *, int);
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long double __polevll(long double, void *, int);
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#endif /* !_MATH_PRIVATE_H_ */
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105
lib/msun/src/polevll.c
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105
lib/msun/src/polevll.c
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@ -0,0 +1,105 @@
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/*-
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* Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* polevll.c
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* p1evll.c
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*
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* Evaluate polynomial
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*
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*
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*
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* SYNOPSIS:
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*
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* int N;
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* long double x, y, coef[N+1], polevl[];
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*
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* y = polevll( x, coef, N );
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*
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*
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*
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* DESCRIPTION:
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*
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* Evaluates polynomial of degree N:
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*
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* 2 N
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* y = C + C x + C x +...+ C x
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* 0 1 2 N
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*
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* Coefficients are stored in reverse order:
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*
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* coef[0] = C , ..., coef[N] = C .
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* N 0
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*
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* The function p1evll() assumes that coef[N] = 1.0 and is
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* omitted from the array. Its calling arguments are
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* otherwise the same as polevll().
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*
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*
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* SPEED:
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*
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* In the interest of speed, there are no checks for out
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* of bounds arithmetic. This routine is used by most of
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* the functions in the library. Depending on available
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* equipment features, the user may wish to rewrite the
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* program in microcode or assembly language.
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*
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <math.h>
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#include "math_private.h"
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/*
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* Polynomial evaluator:
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* P[0] x^n + P[1] x^(n-1) + ... + P[n]
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*/
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long double
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__polevll(long double x, void *PP, int n)
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{
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long double y;
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long double *P;
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P = (long double *)PP;
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y = *P++;
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do {
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y = y * x + *P++;
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} while (--n);
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return (y);
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}
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/*
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* Polynomial evaluator:
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* x^n + P[0] x^(n-1) + P[1] x^(n-2) + ... + P[n]
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*/
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long double
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__p1evll(long double x, void *PP, int n)
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{
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long double y;
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long double *P;
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P = (long double *)PP;
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n -= 1;
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y = x + *P++;
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do {
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y = y * x + *P++;
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} while (--n);
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return (y);
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}
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@ -60,7 +60,7 @@ cpow(double complex a, double complex z)
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y = cimag (z);
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absa = cabs (a);
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if (absa == 0.0) {
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return (CMPLX(0.0, 0.0));
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return (0.0 + 0.0 * I);
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}
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arga = carg (a);
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r = pow (absa, x);
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r = r * exp (-y * arga);
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theta = theta + y * log (absa);
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}
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w = CMPLX(r * cos (theta), r * sin (theta));
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w = r * cos (theta) + (r * sin (theta)) * I;
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return (w);
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}
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@ -59,7 +59,7 @@ cpowf(float complex a, float complex z)
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y = cimagf(z);
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absa = cabsf (a);
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if (absa == 0.0f) {
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return (CMPLXF(0.0f, 0.0f));
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return (0.0f + 0.0f * I);
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}
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arga = cargf (a);
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r = powf (absa, x);
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@ -68,6 +68,6 @@ cpowf(float complex a, float complex z)
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r = r * expf (-y * arga);
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theta = theta + y * logf (absa);
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}
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w = CMPLXF(r * cosf (theta), r * sinf (theta));
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w = r * cosf (theta) + (r * sinf (theta)) * I;
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return (w);
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}
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@ -59,7 +59,7 @@ cpowl(long double complex a, long double complex z)
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y = cimagl(z);
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absa = cabsl(a);
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if (absa == 0.0L) {
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return (CMPLXL(0.0L, 0.0L));
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return (0.0L + 0.0L * I);
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}
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arga = cargl(a);
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r = powl(absa, x);
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@ -68,6 +68,6 @@ cpowl(long double complex a, long double complex z)
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r = r * expl(-y * arga);
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theta = theta + y * logl(absa);
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}
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w = CMPLXL(r * cosl(theta), r * sinl(theta));
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w = r * cosl(theta) + (r * sinl(theta)) * I;
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return (w);
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}
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