273 lines
5.3 KiB
C
273 lines
5.3 KiB
C
/*
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* Copyright (c), Recep Aslantas.
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*
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* MIT License (MIT), http://opensource.org/licenses/MIT
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* Full license can be found in the LICENSE file
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*/
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/*!
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* @brief SIMD like functions
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*/
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/*
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Functions:
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CGLM_INLINE void glm_vec3_broadcast(float val, vec3 d);
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CGLM_INLINE void glm_vec3_fill(vec3 v, float val);
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CGLM_INLINE bool glm_vec3_eq(vec3 v, float val);
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CGLM_INLINE bool glm_vec3_eq_eps(vec3 v, float val);
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CGLM_INLINE bool glm_vec3_eq_all(vec3 v);
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CGLM_INLINE bool glm_vec3_eqv(vec3 a, vec3 b);
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CGLM_INLINE bool glm_vec3_eqv_eps(vec3 a, vec3 b);
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CGLM_INLINE float glm_vec3_max(vec3 v);
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CGLM_INLINE float glm_vec3_min(vec3 v);
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CGLM_INLINE bool glm_vec3_isnan(vec3 v);
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CGLM_INLINE bool glm_vec3_isinf(vec3 v);
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CGLM_INLINE bool glm_vec3_isvalid(vec3 v);
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CGLM_INLINE void glm_vec3_sign(vec3 v, vec3 dest);
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CGLM_INLINE void glm_vec3_abs(vec3 v, vec3 dest);
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CGLM_INLINE void glm_vec3_fract(vec3 v, vec3 dest);
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CGLM_INLINE float glm_vec3_hadd(vec3 v);
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CGLM_INLINE void glm_vec3_sqrt(vec3 v, vec3 dest);
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*/
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#ifndef cglm_vec3_ext_h
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#define cglm_vec3_ext_h
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#include "common.h"
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#include "util.h"
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/*!
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* @brief fill a vector with specified value
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*
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* @param[in] val value
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* @param[out] d dest
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*/
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CGLM_INLINE
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void
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glm_vec3_broadcast(float val, vec3 d) {
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d[0] = d[1] = d[2] = val;
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}
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/*!
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* @brief fill a vector with specified value
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*
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* @param[out] v dest
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* @param[in] val value
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*/
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CGLM_INLINE
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void
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glm_vec3_fill(vec3 v, float val) {
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v[0] = v[1] = v[2] = val;
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}
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/*!
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* @brief check if vector is equal to value (without epsilon)
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*
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* @param[in] v vector
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* @param[in] val value
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*/
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CGLM_INLINE
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bool
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glm_vec3_eq(vec3 v, float val) {
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return v[0] == val && v[0] == v[1] && v[0] == v[2];
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}
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/*!
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* @brief check if vector is equal to value (with epsilon)
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*
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* @param[in] v vector
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* @param[in] val value
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*/
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CGLM_INLINE
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bool
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glm_vec3_eq_eps(vec3 v, float val) {
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return fabsf(v[0] - val) <= GLM_FLT_EPSILON
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&& fabsf(v[1] - val) <= GLM_FLT_EPSILON
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&& fabsf(v[2] - val) <= GLM_FLT_EPSILON;
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}
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/*!
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* @brief check if vectors members are equal (without epsilon)
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*
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* @param[in] v vector
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*/
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CGLM_INLINE
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bool
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glm_vec3_eq_all(vec3 v) {
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return glm_vec3_eq_eps(v, v[0]);
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}
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/*!
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* @brief check if vector is equal to another (without epsilon)
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*
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* @param[in] a vector
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* @param[in] b vector
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*/
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CGLM_INLINE
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bool
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glm_vec3_eqv(vec3 a, vec3 b) {
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return a[0] == b[0]
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&& a[1] == b[1]
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&& a[2] == b[2];
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}
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/*!
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* @brief check if vector is equal to another (with epsilon)
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*
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* @param[in] a vector
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* @param[in] b vector
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*/
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CGLM_INLINE
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bool
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glm_vec3_eqv_eps(vec3 a, vec3 b) {
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return fabsf(a[0] - b[0]) <= GLM_FLT_EPSILON
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&& fabsf(a[1] - b[1]) <= GLM_FLT_EPSILON
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&& fabsf(a[2] - b[2]) <= GLM_FLT_EPSILON;
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}
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/*!
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* @brief max value of vector
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*
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* @param[in] v vector
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*/
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CGLM_INLINE
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float
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glm_vec3_max(vec3 v) {
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float max;
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max = v[0];
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if (v[1] > max)
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max = v[1];
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if (v[2] > max)
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max = v[2];
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return max;
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}
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/*!
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* @brief min value of vector
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*
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* @param[in] v vector
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*/
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CGLM_INLINE
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float
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glm_vec3_min(vec3 v) {
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float min;
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min = v[0];
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if (v[1] < min)
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min = v[1];
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if (v[2] < min)
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min = v[2];
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return min;
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}
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/*!
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* @brief check if all items are NaN (not a number)
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* you should only use this in DEBUG mode or very critical asserts
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*
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* @param[in] v vector
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*/
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CGLM_INLINE
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bool
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glm_vec3_isnan(vec3 v) {
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return isnan(v[0]) || isnan(v[1]) || isnan(v[2]);
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}
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/*!
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* @brief check if all items are INFINITY
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* you should only use this in DEBUG mode or very critical asserts
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*
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* @param[in] v vector
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*/
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CGLM_INLINE
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bool
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glm_vec3_isinf(vec3 v) {
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return isinf(v[0]) || isinf(v[1]) || isinf(v[2]);
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}
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/*!
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* @brief check if all items are valid number
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* you should only use this in DEBUG mode or very critical asserts
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*
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* @param[in] v vector
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*/
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CGLM_INLINE
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bool
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glm_vec3_isvalid(vec3 v) {
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return !glm_vec3_isnan(v) && !glm_vec3_isinf(v);
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}
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/*!
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* @brief get sign of 32 bit float as +1, -1, 0
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*
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* Important: It returns 0 for zero/NaN input
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*
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* @param v vector
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*/
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CGLM_INLINE
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void
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glm_vec3_sign(vec3 v, vec3 dest) {
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dest[0] = glm_signf(v[0]);
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dest[1] = glm_signf(v[1]);
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dest[2] = glm_signf(v[2]);
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}
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/*!
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* @brief absolute value of each vector item
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*
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* @param[in] v vector
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* @param[out] dest destination vector
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*/
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CGLM_INLINE
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void
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glm_vec3_abs(vec3 v, vec3 dest) {
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dest[0] = fabsf(v[0]);
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dest[1] = fabsf(v[1]);
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dest[2] = fabsf(v[2]);
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}
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/*!
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* @brief fractional part of each vector item
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*
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* @param[in] v vector
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* @param[out] dest destination vector
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*/
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CGLM_INLINE
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void
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glm_vec3_fract(vec3 v, vec3 dest) {
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dest[0] = fminf(v[0] - floorf(v[0]), 0.999999940395355224609375f);
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dest[1] = fminf(v[1] - floorf(v[1]), 0.999999940395355224609375f);
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dest[2] = fminf(v[2] - floorf(v[2]), 0.999999940395355224609375f);
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}
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/*!
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* @brief vector reduction by summation
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* @warning could overflow
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*
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* @param[in] v vector
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* @return sum of all vector's elements
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*/
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CGLM_INLINE
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float
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glm_vec3_hadd(vec3 v) {
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return v[0] + v[1] + v[2];
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}
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/*!
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* @brief square root of each vector item
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*
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* @param[in] v vector
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* @param[out] dest destination vector
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*/
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CGLM_INLINE
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void
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glm_vec3_sqrt(vec3 v, vec3 dest) {
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dest[0] = sqrtf(v[0]);
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dest[1] = sqrtf(v[1]);
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dest[2] = sqrtf(v[2]);
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}
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#endif /* cglm_vec3_ext_h */
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