From e0c6872cf40896c7be36b11dcc744620f10adf1d Mon Sep 17 00:00:00 2001 From: Norbert Preining Date: Mon, 2 Sep 2019 13:46:59 +0900 Subject: Initial commit --- support/dktools/dk3mad.h | 193 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 193 insertions(+) create mode 100644 support/dktools/dk3mad.h (limited to 'support/dktools/dk3mad.h') diff --git a/support/dktools/dk3mad.h b/support/dktools/dk3mad.h new file mode 100644 index 0000000000..e32f2e690e --- /dev/null +++ b/support/dktools/dk3mad.h @@ -0,0 +1,193 @@ +/* + WARNING: This file was generated by dkct. + Changes you make here will be lost if dkct is run again! + You should modify the original source and run dkct on it. + Original source: dk3mad.ctr +*/ + +/* +Copyright (C) 2014-2017, Dirk Krause + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: + +* Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. +* Redistributions in binary form must reproduce the above opyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. +* Neither the name of the author nor the names of contributors may be used + to endorse or promote products derived from this software without specific + prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' +AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. +IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#ifndef DK3MAD_H_INCLUDED +/** Avoid multiple inclusions. */ +#define DK3MAD_H_INCLUDED 1 + + +#line 10 "dk3mad.ctr" + +/** @file dk3mad.h Mathematical operations on double numbers. + +Note: You should not use dk3ma_d_add_ok(), dk3ma_d_sub_ok(), +dk3ma_d_mul_ok(), dk3ma_d_div_ok() and dk3ma_d_div_ok() +for new programs. +Perform the calculations traditionally and use the +functions from the dk3mafpe module to check for floating point exceptions. + +*/ + +#include + +#include +#if DK3_HAVE_SYS_TYPES_H +#include +#endif +#if DK3_HAVE_STDINT +#include +#endif +#if DK3_HAVE_INTTYPES_H +#include +#endif +#if DK3_HAVE_LIMITS_H +#include +#endif +#if DK3_HAVE_MATH_H +#include +#endif +#if DK3_HAVE_FLOAT_H +#include +#endif + + +#ifdef __cplusplus +extern "C" { +#endif + +/** Absolute value. + @param x Original value. + @return Absolute value of x. +*/ +double +dk3ma_d_abs(double x); + +/** Rounding to next integer. + @param x Double value. + @return Value rounded to nearest integer. +*/ +double +dk3ma_d_rint(double x); + +/** Addition. + @param a Left operand. + @param b Right operand. + @param ec Pointer to error code variable, may be NULL. + The variable may be set to DK3_ERROR_MATH_OVERFLOW when returning. + @return Summary of a and b. +*/ +double +dk3ma_d_add_ok(double a, double b, int *ec); + +/** Substraction. + @param a Left operand. + @param b Right operand. + @param ec Pointer to error code variable, may be NULL. + The variable may be set to DK3_ERROR_MATH_OVERFLOW when returning. + @return Difference of a and b. +*/ +double +dk3ma_d_sub_ok(double a, double b, int *ec); + +/** Multiplication. + @param a Left operand. + @param b Right operand. + @param ec Pointer to error code variable, may be NULL. + The variable may be set to DK3_ERROR_MATH_OVERFLOW when returning. + @return Product of a and b. +*/ +double +dk3ma_d_mul_ok(double a, double b, int *ec); + +/** Division. + @param a Left operand (nominator). + @param b Right operand (denominator). + @param ec Pointer to error code variable, may be NULL. + The variable may be set to DK3_ERROR_MATH_OVERFLOW or + DK3_ERROR_MATH_DIVZERO when returning. + @return Fraction of a and b. +*/ +double +dk3ma_d_div_ok(double a, double b, int *ec); + +/** Square root. + @param x Original value. + @param ec Pointer to error code variable, may be NULL. + The variable may be set to DK3_ERROR_MATH_OUT_OF_RANGE + if the input is negative. + @return Square root of x. +*/ +double +dk3ma_d_square_ok(double x, int *ec); + +/** Equality check. + @param a Left operand. + @param b Right operand. + @param epsilon Maximum allowed difference between a and b. + @return 1 for equal values, 0 for unequal values. +*/ +int +dk3ma_d_equal(double a, double b, double epsilon); + +/** Arcus tangens for two lengths. + @param y Y length (height). + @param x X length (width). + @return Angle alpha for y/x = tan(alpha). +*/ +double +dk3ma_d_atan2(double y, double x); + +/** Restrict number of digits following the decimal dot. + @param x Original value. + @param n Number of digits after decimal dot. + @return Rounded result. +*/ +double +dk3ma_d_restrict_digits(double x, size_t n); + +/** Restrict number of digits following the decimal dot, + round downwards. + @param x Original value. + @param n Number of digits after decimal dot. + @return Rounded result. +*/ +double +dk3ma_d_restrict_digits_floor(double x, size_t n); + +/** Restrict number of digits following the decimal dot, + round upwards. + @param x Original value. + @param n Number of digits after decimal dot. + @return Rounded result. +*/ +double +dk3ma_d_restrict_digits_ceil(double x, size_t n); + +#ifdef __cplusplus +} +#endif + + +#endif -- cgit v1.2.3