1 2 /*============================================================================ 3 4 This C header file is part of the SoftFloat IEEE Floating-Point Arithmetic 5 Package, Release 3e, by John R. Hauser. 6 7 Copyright 2011, 2012, 2013, 2014, 2015, 2017 The Regents of the University of 8 California. All rights reserved. 9 10 Redistribution and use in source and binary forms, with or without 11 modification, are permitted provided that the following conditions are met: 12 13 1. Redistributions of source code must retain the above copyright notice, 14 this list of conditions, and the following disclaimer. 15 16 2. Redistributions in binary form must reproduce the above copyright notice, 17 this list of conditions, and the following disclaimer in the documentation 18 and/or other materials provided with the distribution. 19 20 3. Neither the name of the University nor the names of its contributors may 21 be used to endorse or promote products derived from this software without 22 specific prior written permission. 23 24 THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY 25 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 26 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE 27 DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY 28 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 29 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 30 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 31 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 32 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 33 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34 35 =============================================================================*/ 36 37 #ifndef softfloat_types_h 38 #define softfloat_types_h 1 39 40 #include <stdint.h> 41 42 /*---------------------------------------------------------------------------- 43 | Types used to pass 16-bit, 32-bit, 64-bit, and 128-bit floating-point 44 | arguments and results to/from functions. These types must be exactly 45 | 16 bits, 32 bits, 64 bits, and 128 bits in size, respectively. Where a 46 | platform has "native" support for IEEE-Standard floating-point formats, 47 | the types below may, if desired, be defined as aliases for the native types 48 | (typically 'float' and 'double', and possibly 'long double'). 49 *----------------------------------------------------------------------------*/ 50 typedef struct { uint16_t v; } float16_t; 51 typedef struct { uint32_t v; } float32_t; 52 typedef struct { uint64_t v; } float64_t; 53 typedef struct { uint64_t v[2]; } float128_t; 54 55 /*---------------------------------------------------------------------------- 56 | The format of an 80-bit extended floating-point number in memory. This 57 | structure must contain a 16-bit field named 'signExp' and a 64-bit field 58 | named 'signif'. 59 *----------------------------------------------------------------------------*/ 60 #ifdef LITTLEENDIAN 61 struct extFloat80M { uint64_t signif; uint16_t signExp; }; 62 #else 63 struct extFloat80M { uint16_t signExp; uint64_t signif; }; 64 #endif 65 66 /*---------------------------------------------------------------------------- 67 | The type used to pass 80-bit extended floating-point arguments and 68 | results to/from functions. This type must have size identical to 69 | 'struct extFloat80M'. Type 'extFloat80_t' can be defined as an alias for 70 | 'struct extFloat80M'. Alternatively, if a platform has "native" support 71 | for IEEE-Standard 80-bit extended floating-point, it may be possible, 72 | if desired, to define 'extFloat80_t' as an alias for the native type 73 | (presumably either 'long double' or a nonstandard compiler-intrinsic type). 74 | In that case, the 'signif' and 'signExp' fields of 'struct extFloat80M' 75 | must align exactly with the locations in memory of the sign, exponent, and 76 | significand of the native type. 77 *----------------------------------------------------------------------------*/ 78 typedef struct extFloat80M extFloat80_t; 79 80 #endif 81 82