| /* |
| * XGL |
| * |
| * Copyright (C) 2014 LunarG, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Chia-I Wu <olv@lunarg.com> |
| */ |
| |
| #ifndef ICD_UTILS_H |
| #define ICD_UTILS_H |
| |
| #include <stdbool.h> |
| #include <stdint.h> |
| #include <assert.h> |
| #include "icd.h" |
| |
| #define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0])) |
| |
| #define u_popcount(u) __builtin_popcount(u) |
| #define u_popcountll(u) __builtin_popcountll(u) |
| |
| #define STATIC_ASSERT(expr) do { \ |
| (void) sizeof(char[1 - 2 * !(expr)]); \ |
| } while (0) |
| |
| #define U_CLAMP(val, min, max) \ |
| ((val) < (min) ? (min) : (val) > (max)? (max) : (val)) |
| |
| /** |
| * Return true if val is power of two, or zero. |
| */ |
| static inline bool u_is_pow2(unsigned int val) |
| { |
| return ((val & (val - 1)) == 0); |
| } |
| |
| static inline unsigned int u_align(unsigned int val, unsigned alignment) |
| { |
| assert(alignment && u_is_pow2(alignment)); |
| return (val + alignment - 1) & ~(alignment - 1); |
| } |
| |
| static inline unsigned int u_minify(unsigned int val, unsigned level) |
| { |
| return (val >> level) ? val >> level : 1; |
| } |
| |
| static inline uint32_t u_fui(float f) |
| { |
| union { |
| float f; |
| uint32_t ui; |
| } u = { .f = f }; |
| |
| return u.ui; |
| } |
| |
| static inline float u_uif(uint32_t ui) |
| { |
| union { |
| float f; |
| uint32_t ui; |
| } u = { .ui = ui }; |
| |
| return u.f; |
| } |
| |
| static inline int u_iround(float f) |
| { |
| if (f >= 0.0f) |
| return (int) (f + 0.5f); |
| else |
| return (int) (f - 0.5f); |
| } |
| |
| uint16_t u_float_to_half(float f); |
| |
| #endif /* ICD_UTILS_H */ |