diff options
Diffstat (limited to 'src/3rdparty/assimp/code/qnan.h')
| -rw-r--r-- | src/3rdparty/assimp/code/qnan.h | 74 |
1 files changed, 39 insertions, 35 deletions
diff --git a/src/3rdparty/assimp/code/qnan.h b/src/3rdparty/assimp/code/qnan.h index 4c86cd822..02412bf21 100644 --- a/src/3rdparty/assimp/code/qnan.h +++ b/src/3rdparty/assimp/code/qnan.h @@ -3,12 +3,12 @@ Open Asset Import Library (assimp) --------------------------------------------------------------------------- -Copyright (c) 2006-2012, assimp team +Copyright (c) 2006-2016, assimp team All rights reserved. -Redistribution and use of this software in source and binary forms, -with or without modification, are permitted provided that the following +Redistribution and use of this software in source and binary forms, +with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above @@ -25,16 +25,16 @@ conditions are met: derived from this software without specific prior written permission of the assimp team. -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --------------------------------------------------------------------------- */ @@ -52,59 +52,63 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef AI_QNAN_H_INCLUDED #define AI_QNAN_H_INCLUDED +#include <assimp/defs.h> +#include <limits> +#include <stdint.h> + // --------------------------------------------------------------------------- -/** Data structure to represent the bit pattern of a 32 Bit +/** Data structure to represent the bit pattern of a 32 Bit * IEEE 754 floating-point number. */ union _IEEESingle { - float Float; - struct - { - uint32_t Frac : 23; - uint32_t Exp : 8; - uint32_t Sign : 1; - } IEEE; + float Float; + struct + { + uint32_t Frac : 23; + uint32_t Exp : 8; + uint32_t Sign : 1; + } IEEE; } ; // --------------------------------------------------------------------------- -/** Check whether a given float is qNaN. +/** Check whether a given float is qNaN. * @param in Input value */ -AI_FORCE_INLINE bool is_qnan(float in) +AI_FORCE_INLINE bool is_qnan(float in) { - // the straightforward solution does not work: - // return (in != in); - // compiler generates code like this - // load <in> to <register-with-different-width> - // compare <register-with-different-width> against <in> - - // FIXME: Use <float> stuff instead? I think fpclassify needs C99 - return (reinterpret_cast<_IEEESingle*>(&in)->IEEE.Exp == (1u << 8)-1 && - reinterpret_cast<_IEEESingle*>(&in)->IEEE.Frac); + // the straightforward solution does not work: + // return (in != in); + // compiler generates code like this + // load <in> to <register-with-different-width> + // compare <register-with-different-width> against <in> + + // FIXME: Use <float> stuff instead? I think fpclassify needs C99 + return (reinterpret_cast<_IEEESingle*>(&in)->IEEE.Exp == (1u << 8)-1 && + reinterpret_cast<_IEEESingle*>(&in)->IEEE.Frac); } // --------------------------------------------------------------------------- -/** Check whether a float is NOT qNaN. +/** Check whether a float is NOT qNaN. * @param in Input value */ -AI_FORCE_INLINE bool is_not_qnan(float in) +AI_FORCE_INLINE bool is_not_qnan(float in) { - return !is_qnan(in); + return !is_qnan(in); } // --------------------------------------------------------------------------- -/** @brief check whether a float is either NaN or (+/-) INF. +/** @brief check whether a float is either NaN or (+/-) INF. * * Denorms return false, they're treated like normal values. * @param in Input value */ AI_FORCE_INLINE bool is_special_float(float in) { - return (reinterpret_cast<_IEEESingle*>(&in)->IEEE.Exp == (1u << 8)-1); + return (reinterpret_cast<_IEEESingle*>(&in)->IEEE.Exp == (1u << 8)-1); } // --------------------------------------------------------------------------- /** @brief Get a fresh qnan. */ AI_FORCE_INLINE float get_qnan() { - return std::numeric_limits<float>::quiet_NaN(); + return std::numeric_limits<float>::quiet_NaN(); } #endif // !! AI_QNAN_H_INCLUDED |