67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
// Copyright (c) 2021 Dominic Masters
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//
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// This software is released under the MIT License.
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// https://opensource.org/licenses/MIT
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#pragma once
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#define MATH_PI ((float)M_PI)
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/**
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* Returns the modulous a result for b. Consdiders negative numbers correctly.
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* @param a Number to modulo against. (a % b)
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* @param b Number to modulo with. (a % b)
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*/
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#define mathMod(a,b) (a%b+b)%b
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/**
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* Returns the maximum of two numbers.
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* @param a Number A.
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* @param b Number B.
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* @returns B if greater than A, otherwise B.
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*/
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#define mathMax(a,b) (a<b?b:a)
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/**
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* Returns the minimum of two numbers.
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* @param a Number A.
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* @param b Number B.
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* @returns B if smaller than A, otherwise A.
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*/
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#define mathMin(a,b) (a>b?b:a)
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/**
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* Clamp a number between two numbers.
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* @param val Value to clamp.
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* @param min The minimum number to clamp to.
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* @param max The maximum number to clamp to.
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*/
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#define mathClamp(val,min,max) mathMin(mathMax(val,min),max)
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/**
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* Returns the absolute value. This will make -n equal n and y equal y.
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* @param n Number to abs.
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* @returns The absolute number.
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*/
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#define mathAbs(n) (n<0?-n:n)
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/**
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* Convert degrees to radians.
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* @param n Degrees to convert.
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* @returns The number in radians.
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*/
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#define mathDeg2Rad(n) (n * MATH_PI / 180.0f)
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/**
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* Convert radians to degrees.
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* @param n Radians to convert.
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* @returns The number in degrees.
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*/
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#define mathRad2Deg(n) (n * 180.0f / MATH_PI)
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/**
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* Sign the given number, essentially clamps > 0 to 1, and < 0 to -1.
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* @param n Number to sign.
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* @returns The signed number.
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*/
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#define mathSign(n) (n>=0 ? 1.0f : -1.0f) |