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https://github.com/openhwgroup/cvw
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225 lines
6.3 KiB
C
225 lines
6.3 KiB
C
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/*============================================================================
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This C source file is part of TestFloat, Release 3e, a package of programs for
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testing the correctness of floating-point arithmetic complying with the IEEE
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Standard for Floating-Point, by John R. Hauser.
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Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 The Regents of the
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University of California. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions, and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions, and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the University nor the names of its contributors may
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be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
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DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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=============================================================================*/
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "platform.h"
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#include "uint128.h"
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#include "softfloat.h"
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#include "writeHex.h"
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void writeHex_bool( bool a, char sepChar )
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{
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fputc( a ? '1' : '0', stdout );
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if ( sepChar ) fputc( sepChar, stdout );
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}
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void writeHex_ui8( uint_fast8_t a, char sepChar )
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{
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int digit;
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digit = a>>4 & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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digit = a & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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if ( sepChar ) fputc( sepChar, stdout );
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}
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static void writeHex_ui12( uint_fast16_t a, char sepChar )
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{
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int digit;
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digit = a>>8 & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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digit = a>>4 & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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digit = a & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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if ( sepChar ) fputc( sepChar, stdout );
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}
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void writeHex_ui16( uint_fast16_t a, char sepChar )
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{
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int digit;
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digit = a>>12 & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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digit = a>>8 & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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digit = a>>4 & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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digit = a & 0xF;
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if ( 9 < digit ) digit += 'A' - ('0' + 10);
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fputc( '0' + digit, stdout );
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if ( sepChar ) fputc( sepChar, stdout );
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}
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void writeHex_ui32( uint_fast32_t a, char sepChar )
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{
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writeHex_ui16( a>>16, 0 );
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writeHex_ui16( a, sepChar );
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}
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void writeHex_ui64( uint_fast64_t a, char sepChar )
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{
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writeHex_ui32( a>>32, 0 );
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writeHex_ui32( a, sepChar );
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}
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#ifdef FLOAT16
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void writeHex_f16( float16_t a, char sepChar )
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{
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union { uint16_t ui; float16_t f; } uA;
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uint_fast16_t uiA;
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uA.f = a;
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uiA = uA.ui;
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fputc( uiA & 0x8000 ? '-' : '+', stdout );
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writeHex_ui8( uiA>>10 & 0x1F, 0 );
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fputc( '.', stdout );
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fputc( '0' + (uiA>>8 & 3), stdout );
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writeHex_ui8( uiA, sepChar );
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}
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#endif
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void writeHex_f32( float32_t a, char sepChar )
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{
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union { uint32_t ui; float32_t f; } uA;
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uint_fast32_t uiA;
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uA.f = a;
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uiA = uA.ui;
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fputc( uiA & 0x80000000 ? '-' : '+', stdout );
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writeHex_ui8( uiA>>23, 0 );
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fputc( '.', stdout );
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writeHex_ui8( uiA>>16 & 0x7F, 0 );
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writeHex_ui16( uiA, sepChar );
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}
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#ifdef FLOAT64
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void writeHex_f64( float64_t a, char sepChar )
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{
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union { uint64_t ui; float64_t f; } uA;
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uint_fast64_t uiA;
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uA.f = a;
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uiA = uA.ui;
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fputc( uiA & UINT64_C( 0x8000000000000000 ) ? '-' : '+', stdout );
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writeHex_ui12( uiA>>52 & 0x7FF, 0 );
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fputc( '.', stdout );
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writeHex_ui12( uiA>>40, 0 );
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writeHex_ui8( uiA>>32, 0 );
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writeHex_ui32( uiA, sepChar );
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}
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#endif
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#ifdef EXTFLOAT80
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void writeHex_extF80M( const extFloat80_t *aPtr, char sepChar )
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{
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const struct extFloat80M *aSPtr;
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uint_fast16_t uiA64;
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aSPtr = (const struct extFloat80M *) aPtr;
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uiA64 = aSPtr->signExp;
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fputc( uiA64 & 0x8000 ? '-' : '+', stdout );
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writeHex_ui16( uiA64 & 0x7FFF, 0 );
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fputc( '.', stdout );
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writeHex_ui64( aSPtr->signif, sepChar );
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}
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#endif
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#ifdef FLOAT128
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void writeHex_f128M( const float128_t *aPtr, char sepChar )
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{
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const struct uint128 *uiAPtr;
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uint_fast64_t uiA64;
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uiAPtr = (const struct uint128 *) aPtr;
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uiA64 = uiAPtr->v64;
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fputc( uiA64 & UINT64_C( 0x8000000000000000 ) ? '-' : '+', stdout );
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writeHex_ui16( uiA64>>48 & 0x7FFF, 0 );
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fputc( '.', stdout );
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writeHex_ui16( uiA64>>32, 0 );
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writeHex_ui32( uiA64, 0 );
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writeHex_ui64( uiAPtr->v0, sepChar );
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}
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#endif
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void writeHex_softfloat_flags( uint_fast8_t flags, char sepChar )
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{
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fputc( flags & softfloat_flag_invalid ? 'v' : '.', stdout );
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fputc( flags & softfloat_flag_infinite ? 'i' : '.', stdout );
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fputc( flags & softfloat_flag_overflow ? 'o' : '.', stdout );
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fputc( flags & softfloat_flag_underflow ? 'u' : '.', stdout );
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fputc( flags & softfloat_flag_inexact ? 'x' : '.', stdout );
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if ( sepChar ) fputc( sepChar, stdout );
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}
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