diff options
author | sanine <sanine.not@pm.me> | 2022-04-16 11:55:54 -0500 |
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committer | sanine <sanine.not@pm.me> | 2022-04-16 11:55:54 -0500 |
commit | 8fb7916a0d0cb007a4c3a4e6a31af58765268ca3 (patch) | |
tree | 52b5524a94a5b04e17a1fd7f8aca988ab6d0c75f /src/mesh/assimp-master/include/assimp/qnan.h | |
parent | db81b925d776103326128bf629cbdda576a223e7 (diff) |
delete src/mesh/assimp-master
Diffstat (limited to 'src/mesh/assimp-master/include/assimp/qnan.h')
-rw-r--r-- | src/mesh/assimp-master/include/assimp/qnan.h | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/src/mesh/assimp-master/include/assimp/qnan.h b/src/mesh/assimp-master/include/assimp/qnan.h deleted file mode 100644 index c64caba..0000000 --- a/src/mesh/assimp-master/include/assimp/qnan.h +++ /dev/null @@ -1,162 +0,0 @@ -/* ---------------------------------------------------------------------------- -Open Asset Import Library (assimp) ---------------------------------------------------------------------------- - -Copyright (c) 2006-2022, 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 -conditions are met: - -* Redistributions of source code must retain the above - copyright notice, this list of conditions and the - following disclaimer. - -* Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the - following disclaimer in the documentation and/or other - materials provided with the distribution. - -* Neither the name of the assimp team, nor the names of its - contributors may be used to endorse or promote products - 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 -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -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 -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 -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ---------------------------------------------------------------------------- -*/ - -/** @file qnan.h - * @brief Some utilities for our dealings with qnans. - * - * @note Some loaders use qnans to mark invalid values tempoarily, also - * Assimp explicitly enforces undefined normals to be set to qnan. - * qnan utilities are available in standard libraries (C99 for example) - * but last time I checked compiler coverage was so bad that I decided - * to reinvent the wheel. - */ -#pragma once -#ifndef AI_QNAN_H_INCLUDED -#define AI_QNAN_H_INCLUDED - -#ifdef __GNUC__ -# pragma GCC system_header -#endif - -#include <assimp/defs.h> - -#include <limits> -#include <stdint.h> - -// --------------------------------------------------------------------------- -/** 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; -}; - -// --------------------------------------------------------------------------- -/** Data structure to represent the bit pattern of a 64 Bit - * IEEE 754 floating-point number. */ -union _IEEEDouble { - double Double; - struct - { - uint64_t Frac : 52; - uint64_t Exp : 11; - uint64_t Sign : 1; - } IEEE; -}; - -// --------------------------------------------------------------------------- -/** Check whether a given float is qNaN. - * @param in Input value */ -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 - _IEEESingle temp; - memcpy(&temp, &in, sizeof(float)); - return (temp.IEEE.Exp == (1u << 8)-1 && - temp.IEEE.Frac); -} - -// --------------------------------------------------------------------------- -/** Check whether a given double is qNaN. - * @param in Input value */ -AI_FORCE_INLINE bool is_qnan(double 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 - _IEEEDouble temp; - memcpy(&temp, &in, sizeof(in)); - return (temp.IEEE.Exp == (1u << 11)-1 && - temp.IEEE.Frac); -} - -// --------------------------------------------------------------------------- -/** @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) { - _IEEESingle temp; - memcpy(&temp, &in, sizeof(float)); - return (temp.IEEE.Exp == (1u << 8)-1); -} - -// --------------------------------------------------------------------------- -/** @brief check whether a double 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(double in) { - _IEEESingle temp; - memcpy(&temp, &in, sizeof(float)); - return (temp.IEEE.Exp == (1u << 11)-1); -} - -// --------------------------------------------------------------------------- -/** Check whether a float is NOT qNaN. - * @param in Input value */ -template<class TReal> -AI_FORCE_INLINE bool is_not_qnan(TReal in) { - return !is_qnan(in); -} - -// --------------------------------------------------------------------------- -/** @brief Get a fresh qnan. */ -AI_FORCE_INLINE ai_real get_qnan() { - return std::numeric_limits<ai_real>::quiet_NaN(); -} - -#endif // !! AI_QNAN_H_INCLUDED |