mirror of https://gitlab.com/rnger/amath
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*-
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* Copyright (c) 2014-2017 Carsten Sonne Larsen <cs@innolan.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Project homepage:
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* http://amath.innolan.net
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*
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*/
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#ifndef AMATH_LIB_MATH_H
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#define AMATH_LIB_MATH_H
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/**
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* @file math.h
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* @brief Functions in math library for handling real numbers.
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* @details The library is based on fdlib by Sun Microsystems.
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*
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* The original library can be downloaded at [netlib.org]:
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* http://www.netlib.org/fdlibm/
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*
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* or from mirror site [hensa.ac.uk]:
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* http://www.hensa.ac.uk/
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*
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* All headers and dates are preserved.
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*
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* More info on double precision floating point at [Wikipedia]:
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* https://wikipedia.org/wiki/Double-precision_floating-point_format
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*/
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#define PI 3.14159265358979323846
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#define EULERS 2.71828182845904523536
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#define LOG2 0.69314718055994530942
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#define sgn(x) (x > 0.0 ? 1.0 : x < 0.0 ? -1.0 : 0.0)
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#define isgn(x) (x > 0 ? 1 : x < 0 ? -1 : 0)
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#define log2p(x,y) (y != 1.0 ? log(y)/log(x) : 0.0)
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#define abs(x) (x > 0 ? x : -x)
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#define D_INFN 1.0e-308
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#define D_INFP 1.0e+308
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#ifdef __cplusplus
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extern "C" {
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#endif
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int isnan(double x);
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int finite(double x);
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double fabs(double x);
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double ceil(double x);
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double floor(double x);
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double round(double x);
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double trunc(double x);
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double exp(double x);
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double sqrt(double x);
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double cbrt(double x);
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double log(double x);
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double log10(double x);
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double cos(double x);
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double sin(double x);
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double tan(double x);
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double acos(double x);
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double asin(double x);
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double atan(double x);
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double cosh(double x);
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double sinh(double x);
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double tanh(double x);
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double acosh(double x);
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double asinh(double x);
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double atanh(double x);
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double aver(double x);
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double acvs(double x);
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double ahv(double x);
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double ahvc(double x);
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double pow(double x, double y);
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double fmod(double x, double y);
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double atan2(double y, double x);
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double hypot(double x, double y);
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double log1p(double x);
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double expm1(double x);
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double scalbn(double x, int n);
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double copysign(double x, double y);
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int rempio2(double x, double* y);
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#ifdef __cplusplus
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}
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#endif
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#endif
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