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Diffstat (limited to 'include/cglm/vec3-ext.h')
| -rw-r--r-- | include/cglm/vec3-ext.h | 345 |
1 files changed, 345 insertions, 0 deletions
diff --git a/include/cglm/vec3-ext.h b/include/cglm/vec3-ext.h new file mode 100644 index 0000000..4413cc2 --- /dev/null +++ b/include/cglm/vec3-ext.h @@ -0,0 +1,345 @@ +/* + * Copyright (c), Recep Aslantas. + * + * MIT License (MIT), http://opensource.org/licenses/MIT + * Full license can be found in the LICENSE file + */ + +/*! + * @brief SIMD like functions + */ + +/* + Functions: + CGLM_INLINE void glm_vec3_broadcast(float val, vec3 d); + CGLM_INLINE void glm_vec3_fill(vec3 v, float val); + CGLM_INLINE bool glm_vec3_eq(vec3 v, float val); + CGLM_INLINE bool glm_vec3_eq_eps(vec3 v, float val); + CGLM_INLINE bool glm_vec3_eq_all(vec3 v); + CGLM_INLINE bool glm_vec3_eqv(vec3 a, vec3 b); + CGLM_INLINE bool glm_vec3_eqv_eps(vec3 a, vec3 b); + CGLM_INLINE float glm_vec3_max(vec3 v); + CGLM_INLINE float glm_vec3_min(vec3 v); + CGLM_INLINE bool glm_vec3_isnan(vec3 v); + CGLM_INLINE bool glm_vec3_isinf(vec3 v); + CGLM_INLINE bool glm_vec3_isvalid(vec3 v); + CGLM_INLINE void glm_vec3_sign(vec3 v, vec3 dest); + CGLM_INLINE void glm_vec3_abs(vec3 v, vec3 dest); + CGLM_INLINE void glm_vec3_fract(vec3 v, vec3 dest); + CGLM_INLINE void glm_vec3_floor(vec3 v, vec3 dest); + CGLM_INLINE float glm_vec3_mods(vec3 v, float s, vec3 dest); + CGLM_INLINE float glm_vec3_steps(float edge, vec3 v, vec3 dest); + CGLM_INLINE void glm_vec3_stepr(vec3 edge, float v, vec3 dest); + CGLM_INLINE float glm_vec3_hadd(vec3 v); + CGLM_INLINE void glm_vec3_sqrt(vec3 v, vec3 dest); + */ + +#ifndef cglm_vec3_ext_h +#define cglm_vec3_ext_h + +#include "common.h" +#include "util.h" + +/*! + * @brief fill a vector with specified value + * + * @param[in] val value + * @param[out] d dest + */ +CGLM_INLINE +void +glm_vec3_broadcast(float val, vec3 d) { + d[0] = d[1] = d[2] = val; +} + +/*! + * @brief fill a vector with specified value + * + * @param[out] v dest + * @param[in] val value + */ +CGLM_INLINE +void +glm_vec3_fill(vec3 v, float val) { + v[0] = v[1] = v[2] = val; +} + +/*! + * @brief check if vector is equal to value (without epsilon) + * + * @param[in] v vector + * @param[in] val value + */ +CGLM_INLINE +bool +glm_vec3_eq(vec3 v, float val) { + return v[0] == val && v[0] == v[1] && v[0] == v[2]; +} + +/*! + * @brief check if vector is equal to value (with epsilon) + * + * @param[in] v vector + * @param[in] val value + */ +CGLM_INLINE +bool +glm_vec3_eq_eps(vec3 v, float val) { + return fabsf(v[0] - val) <= GLM_FLT_EPSILON + && fabsf(v[1] - val) <= GLM_FLT_EPSILON + && fabsf(v[2] - val) <= GLM_FLT_EPSILON; +} + +/*! + * @brief check if vector members are equal (without epsilon) + * + * @param[in] v vector + */ +CGLM_INLINE +bool +glm_vec3_eq_all(vec3 v) { + return glm_vec3_eq_eps(v, v[0]); +} + +/*! + * @brief check if vector is equal to another (without epsilon) + * + * @param[in] a vector + * @param[in] b vector + */ +CGLM_INLINE +bool +glm_vec3_eqv(vec3 a, vec3 b) { + return a[0] == b[0] + && a[1] == b[1] + && a[2] == b[2]; +} + +/*! + * @brief check if vector is equal to another (with epsilon) + * + * @param[in] a vector + * @param[in] b vector + */ +CGLM_INLINE +bool +glm_vec3_eqv_eps(vec3 a, vec3 b) { + return fabsf(a[0] - b[0]) <= GLM_FLT_EPSILON + && fabsf(a[1] - b[1]) <= GLM_FLT_EPSILON + && fabsf(a[2] - b[2]) <= GLM_FLT_EPSILON; +} + +/*! + * @brief max value of vector + * + * @param[in] v vector + */ +CGLM_INLINE +float +glm_vec3_max(vec3 v) { + float max; + + max = v[0]; + if (v[1] > max) + max = v[1]; + if (v[2] > max) + max = v[2]; + + return max; +} + +/*! + * @brief min value of vector + * + * @param[in] v vector + */ +CGLM_INLINE +float +glm_vec3_min(vec3 v) { + float min; + + min = v[0]; + if (v[1] < min) + min = v[1]; + if (v[2] < min) + min = v[2]; + + return min; +} + +/*! + * @brief check if one of items is NaN (not a number) + * you should only use this in DEBUG mode or very critical asserts + * + * @param[in] v vector + */ +CGLM_INLINE +bool +glm_vec3_isnan(vec3 v) { +#ifndef CGLM_FAST_MATH + return isnan(v[0]) || isnan(v[1]) || isnan(v[2]); +#else + return false; +#endif +} + +/*! + * @brief check if one of items is INFINITY + * you should only use this in DEBUG mode or very critical asserts + * + * @param[in] v vector + */ +CGLM_INLINE +bool +glm_vec3_isinf(vec3 v) { +#ifndef CGLM_FAST_MATH + return isinf(v[0]) || isinf(v[1]) || isinf(v[2]); +#else + return false; +#endif +} + +/*! + * @brief check if all items are valid number + * you should only use this in DEBUG mode or very critical asserts + * + * @param[in] v vector + */ +CGLM_INLINE +bool +glm_vec3_isvalid(vec3 v) { + return !glm_vec3_isnan(v) && !glm_vec3_isinf(v); +} + +/*! + * @brief get sign of 32 bit float as +1, -1, 0 + * + * Important: It returns 0 for zero/NaN input + * + * @param v vector + */ +CGLM_INLINE +void +glm_vec3_sign(vec3 v, vec3 dest) { + dest[0] = glm_signf(v[0]); + dest[1] = glm_signf(v[1]); + dest[2] = glm_signf(v[2]); +} + +/*! + * @brief absolute value of each vector item + * + * @param[in] v vector + * @param[out] dest destination vector + */ +CGLM_INLINE +void +glm_vec3_abs(vec3 v, vec3 dest) { + dest[0] = fabsf(v[0]); + dest[1] = fabsf(v[1]); + dest[2] = fabsf(v[2]); +} + +/*! + * @brief fractional part of each vector item + * + * @param[in] v vector + * @param[out] dest destination vector + */ +CGLM_INLINE +void +glm_vec3_fract(vec3 v, vec3 dest) { + dest[0] = fminf(v[0] - floorf(v[0]), 0.999999940395355224609375f); + dest[1] = fminf(v[1] - floorf(v[1]), 0.999999940395355224609375f); + dest[2] = fminf(v[2] - floorf(v[2]), 0.999999940395355224609375f); +} + +/*! + * @brief floor of each vector item + * + * @param[in] v vector + * @param[out] dest destination vector + */ +CGLM_INLINE +void +glm_vec3_floor(vec3 v, vec3 dest) { + dest[0] = floorf(v[0]); + dest[1] = floorf(v[1]); + dest[2] = floorf(v[2]); +} + +/*! + * @brief mod of each vector item, result is written to dest (dest = v % s) + * + * @param[in] v vector + * @param[in] s scalar + * @param[out] dest destination vector + */ +CGLM_INLINE +void +glm_vec3_mods(vec3 v, float s, vec3 dest) { + dest[0] = fmodf(v[0], s); + dest[1] = fmodf(v[1], s); + dest[2] = fmodf(v[2], s); +} + +/*! + * @brief threshold each vector item with scalar + * condition is: (x[i] < edge) ? 0.0 : 1.0 + * + * @param[in] edge threshold + * @param[in] x vector to test against threshold + * @param[out] dest destination + */ +CGLM_INLINE +void +glm_vec3_steps(float edge, vec3 x, vec3 dest) { + dest[0] = glm_step(edge, x[0]); + dest[1] = glm_step(edge, x[1]); + dest[2] = glm_step(edge, x[2]); +} + +/*! + * @brief threshold a value with *vector* as the threshold + * condition is: (x < edge[i]) ? 0.0 : 1.0 + * + * @param[in] edge threshold vector + * @param[in] x value to test against threshold + * @param[out] dest destination + */ +CGLM_INLINE +void +glm_vec3_stepr(vec3 edge, float x, vec3 dest) { + dest[0] = glm_step(edge[0], x); + dest[1] = glm_step(edge[1], x); + dest[2] = glm_step(edge[2], x); +} + +/*! + * @brief vector reduction by summation + * @warning could overflow + * + * @param[in] v vector + * @return sum of all vector's elements + */ +CGLM_INLINE +float +glm_vec3_hadd(vec3 v) { + return v[0] + v[1] + v[2]; +} + +/*! + * @brief square root of each vector item + * + * @param[in] v vector + * @param[out] dest destination vector + */ +CGLM_INLINE +void +glm_vec3_sqrt(vec3 v, vec3 dest) { + dest[0] = sqrtf(v[0]); + dest[1] = sqrtf(v[1]); + dest[2] = sqrtf(v[2]); +} + +#endif /* cglm_vec3_ext_h */ |