| 0,0 → 1,112 |
|---|
| /* |
| * Copyright (C) 2005 Josef Cejka |
| * All rights reserved. |
| * |
| * Redistribution and use 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. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. |
| */ |
| |
| /** @addtogroup softfloat |
| * @{ |
| */ |
| /** @file |
| */ |
| |
| #ifndef __SFTYPES_H__ |
| #define __SFTYPES_H__ |
| |
| #include <endian.h> |
| #include <stdint.h> |
| |
| typedef union { |
| float f; |
| uint32_t binary; |
| |
| struct { |
| #if __BYTE_ORDER == __BIG_ENDIAN |
| uint32_t sign:1; |
| uint32_t exp:8; |
| uint32_t fraction:23; |
| #elif __BYTE_ORDER == __LITTLE_ENDIAN |
| uint32_t fraction:23; |
| uint32_t exp:8; |
| uint32_t sign:1; |
| #else |
| #error "Unknown endians." |
| #endif |
| } parts __attribute__ ((packed)); |
| } float32; |
| |
| typedef union { |
| double d; |
| uint64_t binary; |
| |
| struct { |
| #if __BYTE_ORDER == __BIG_ENDIAN |
| uint64_t sign:1; |
| uint64_t exp:11; |
| uint64_t fraction:52; |
| #elif __BYTE_ORDER == __LITTLE_ENDIAN |
| uint64_t fraction:52; |
| uint64_t exp:11; |
| uint64_t sign:1; |
| #else |
| #error "Unknown endians." |
| #endif |
| } parts __attribute__ ((packed)); |
| } float64; |
| |
| #define FLOAT32_MAX 0x7f800000 |
| #define FLOAT32_MIN 0xff800000 |
| #define FLOAT64_MAX |
| #define FLOAT64_MIN |
| |
| /* For recognizing NaNs or infinity use isFloat32NaN and is Float32Inf, comparing with this constants is not sufficient */ |
| #define FLOAT32_NAN 0x7FC00001 |
| #define FLOAT32_SIGNAN 0x7F800001 |
| #define FLOAT32_INF 0x7F800000 |
| |
| #define FLOAT64_NAN 0x7FF8000000000001ll |
| #define FLOAT64_SIGNAN 0x7FF0000000000001ll |
| #define FLOAT64_INF 0x7FF0000000000000ll |
| |
| #define FLOAT32_FRACTION_SIZE 23 |
| #define FLOAT64_FRACTION_SIZE 52 |
| |
| #define FLOAT32_HIDDEN_BIT_MASK 0x800000 |
| #define FLOAT64_HIDDEN_BIT_MASK 0x10000000000000ll |
| |
| #define FLOAT32_MAX_EXPONENT 0xFF |
| #define FLOAT64_MAX_EXPONENT 0x7FF |
| |
| #define FLOAT32_BIAS 0x7F |
| #define FLOAT64_BIAS 0x3FF |
| #define FLOAT80_BIAS 0x3FFF |
| |
| |
| #endif |
| |
| |
| /** @} |
| */ |
| |