| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | #pragma once | ||
| 2 | |||
| 3 | #include "setup.hpp" | ||
| 4 | #include <limits> | ||
| 5 | |||
| 6 | namespace glm{ | ||
| 7 | namespace detail | ||
| 8 | { | ||
| 9 | template<typename genFIType, bool /*signed*/> | ||
| 10 | struct compute_abs | ||
| 11 | {}; | ||
| 12 | |||
| 13 | template<typename genFIType> | ||
| 14 | struct compute_abs<genFIType, true> | ||
| 15 | { | ||
| 16 | GLM_FUNC_QUALIFIER GLM_CONSTEXPR static genFIType call(genFIType x) | ||
| 17 | { | ||
| 18 | GLM_STATIC_ASSERT( | ||
| 19 | std::numeric_limits<genFIType>::is_iec559 || std::numeric_limits<genFIType>::is_signed, | ||
| 20 | "'abs' only accept floating-point and integer scalar or vector inputs"); | ||
| 21 | |||
| 22 | ✗ | return x >= genFIType(0) ? x : -x; | |
| 23 | // TODO, perf comp with: *(((int *) &x) + 1) &= 0x7fffffff; | ||
| 24 | } | ||
| 25 | }; | ||
| 26 | |||
| 27 | #if GLM_COMPILER & GLM_COMPILER_CUDA | ||
| 28 | template<> | ||
| 29 | struct compute_abs<float, true> | ||
| 30 | { | ||
| 31 | GLM_FUNC_QUALIFIER GLM_CONSTEXPR static float call(float x) | ||
| 32 | { | ||
| 33 | return fabsf(x); | ||
| 34 | } | ||
| 35 | }; | ||
| 36 | #endif | ||
| 37 | |||
| 38 | template<typename genFIType> | ||
| 39 | struct compute_abs<genFIType, false> | ||
| 40 | { | ||
| 41 | GLM_FUNC_QUALIFIER GLM_CONSTEXPR static genFIType call(genFIType x) | ||
| 42 | { | ||
| 43 | GLM_STATIC_ASSERT( | ||
| 44 | (!std::numeric_limits<genFIType>::is_signed && std::numeric_limits<genFIType>::is_integer), | ||
| 45 | "'abs' only accept floating-point and integer scalar or vector inputs"); | ||
| 46 | return x; | ||
| 47 | } | ||
| 48 | }; | ||
| 49 | }//namespace detail | ||
| 50 | }//namespace glm | ||
| 51 |