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e84f5ab387
* Un-fake a couple of matches in memory manip functions * Document fmodf * Un-fake a couple of matches in memory manip functions * Document fmodf * Rename functions and files * Document memmove, memsets, memcpys * Format * Sort out some missing sizeofs * Name fmodf * Rename local variables * size_t * Use COBRA_SHADOW_TEX_SIZE * Review * Tweak the Doxyfile to remove @brief requirement * Roman's review * Fix a bug comment * Change fmodf
27 lines
753 B
C
27 lines
753 B
C
#include "global.h"
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/**
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* Computes one `x` modulo `y` for floats.
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*
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* Acts like the standard C fmodf except does not handle Infinity. See https://en.cppreference.com/w/c/numeric/math/fmod
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* for the details. It summarizes this function as follows:
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* "The floating-point remainder of the division operation x/y calculated by this function is exactly the value x - n*y,
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* where n is x/y with its fractional part truncated.
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*
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* The returned value has the same sign as x and is less or equal to y in magnitude."
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*
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* @param x dividend
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* @param y modulus
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*
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* @return f32 0.0f if y is 0.0f, or x modulo y otherwise
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*/
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f32 fmodf(f32 x, f32 y) {
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s32 n;
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if (y == 0.0f) {
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return 0.0f;
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}
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n = x / y;
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return x - (n * y);
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}
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