1 /////////////////////////////////////////////////////////////////////////// 2 // 3 // Copyright (c) 2002, Industrial Light & Magic, a division of Lucas 4 // Digital Ltd. LLC 5 // 6 // All rights reserved. 7 // 8 // Redistribution and use in source and binary forms, with or without 9 // modification, are permitted provided that the following conditions are 10 // met: 11 // * Redistributions of source code must retain the above copyright 12 // notice, this list of conditions and the following disclaimer. 13 // * Redistributions in binary form must reproduce the above 14 // copyright notice, this list of conditions and the following disclaimer 15 // in the documentation and/or other materials provided with the 16 // distribution. 17 // * Neither the name of Industrial Light & Magic nor the names of 18 // its contributors may be used to endorse or promote products derived 19 // from this software without specific prior written permission. 20 // 21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 // 33 /////////////////////////////////////////////////////////////////////////// 34 35 36 // Primary authors: 37 // Florian Kainz <kainz (at) ilm.com> 38 // Rod Bogart <rgb (at) ilm.com> 39 40 41 #ifndef INCLUDED_HALF_LIMITS_H 42 #define INCLUDED_HALF_LIMITS_H 43 44 45 //------------------------------------------------------------------------ 46 // 47 // C++ standard library-style numeric_limits for class half 48 // 49 //------------------------------------------------------------------------ 50 51 #include <limits> 52 #include "half.h" 53 54 namespace std { 55 56 template <> 57 class numeric_limits <half> 58 { 59 public: 60 61 static const bool is_specialized = true; 62 63 static half min () throw () {return HALF_NRM_MIN;} 64 static half max () throw () {return HALF_MAX;} 65 66 static const int digits = HALF_MANT_DIG; 67 static const int digits10 = HALF_DIG; 68 static const bool is_signed = true; 69 static const bool is_integer = false; 70 static const bool is_exact = false; 71 static const int radix = HALF_RADIX; 72 static half epsilon () throw () {return HALF_EPSILON;} 73 static half round_error () throw () {return HALF_EPSILON / 2;} 74 75 static const int min_exponent = HALF_MIN_EXP; 76 static const int min_exponent10 = HALF_MIN_10_EXP; 77 static const int max_exponent = HALF_MAX_EXP; 78 static const int max_exponent10 = HALF_MAX_10_EXP; 79 80 static const bool has_infinity = true; 81 static const bool has_quiet_NaN = true; 82 static const bool has_signaling_NaN = true; 83 static const float_denorm_style has_denorm = denorm_present; 84 static const bool has_denorm_loss = false; 85 static half infinity () throw () {return half::posInf();} 86 static half quiet_NaN () throw () {return half::qNan();} 87 static half signaling_NaN () throw () {return half::sNan();} 88 static half denorm_min () throw () {return HALF_MIN;} 89 90 static const bool is_iec559 = false; 91 static const bool is_bounded = false; 92 static const bool is_modulo = false; 93 94 static const bool traps = true; 95 static const bool tinyness_before = false; 96 static const float_round_style round_style = round_to_nearest; 97 }; 98 99 100 } // namespace std 101 102 #endif 103
