223 lines
6.3 KiB
C
223 lines
6.3 KiB
C
/* $NetBSD: writeHex.c,v 1.4 2002/02/21 07:38:16 itojun Exp $ */
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/* This is a derivative work. */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Ross Harvey.
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*
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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===============================================================================
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This C source file is part of TestFloat, Release 2a, a package of programs
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for testing the correctness of floating-point arithmetic complying to the
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IEC/IEEE Standard for Floating-Point.
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Written by John R. Hauser. More information is available through the Web
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page `http://HTTP.CS.Berkeley.EDU/~jhauser/arithmetic/TestFloat.html'.
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THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE. Although reasonable effort
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has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
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TIMES RESULT IN INCORRECT BEHAVIOR. USE OF THIS SOFTWARE IS RESTRICTED TO
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PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
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AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.
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Derivative works are acceptable, even for commercial purposes, so long as
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(1) they include prominent notice that the work is derivative, and (2) they
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include prominent notice akin to these four paragraphs for those parts of
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this code that are retained.
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===============================================================================
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*/
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#include <stdio.h>
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#include "milieu.h"
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#include "softfloat.h"
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#include "writeHex.h"
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void writeHex_flag( flag a, FILE *stream )
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{
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fputc( a ? '1' : '0', stream );
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}
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static void writeHex_bits8( bits8 a, FILE *stream )
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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, stream );
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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, stream );
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}
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static void writeHex_bits12( int16 a, FILE *stream )
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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, stream );
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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, stream );
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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, stream );
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}
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static void writeHex_bits16( bits16 a, FILE *stream )
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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, stream );
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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, stream );
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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, stream );
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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, stream );
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}
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void writeHex_bits32( bits32 a, FILE *stream )
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{
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writeHex_bits16( a>>16, stream );
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writeHex_bits16( a, stream );
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}
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#ifdef BITS64
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void writeHex_bits64( bits64 a, FILE *stream )
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{
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writeHex_bits32( a>>32, stream );
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writeHex_bits32( a, stream );
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}
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#endif
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void writeHex_float32( float32 a, FILE *stream )
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{
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fputc( ( ( (sbits32) a ) < 0 ) ? '8' : '0', stream );
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writeHex_bits8( a>>23, stream );
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fputc( '.', stream );
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writeHex_bits8( ( a>>16 ) & 0x7F, stream );
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writeHex_bits16( a, stream );
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}
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#ifdef BITS64
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void writeHex_float64( float64 a, FILE *stream )
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{
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writeHex_bits12( a>>52, stream );
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fputc( '.', stream );
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writeHex_bits12( a>>40, stream );
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writeHex_bits8( a>>32, stream );
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writeHex_bits32( a, stream );
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}
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#else
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void writeHex_float64( float64 a, FILE *stream )
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{
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writeHex_bits12( a.high>>20, stream );
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fputc( '.', stream );
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writeHex_bits12( a.high>>8, stream );
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writeHex_bits8( a.high, stream );
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writeHex_bits32( a.low, stream );
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}
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#endif
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#ifdef FLOATX80
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void writeHex_floatx80( floatx80 a, FILE *stream )
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{
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writeHex_bits16( a.high, stream );
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fputc( '.', stream );
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writeHex_bits64( a.low, stream );
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}
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#endif
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#ifdef FLOAT128
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void writeHex_float128( float128 a, FILE *stream )
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{
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writeHex_bits16( a.high>>48, stream );
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fputc( '.', stream );
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writeHex_bits16( a.high>>32, stream );
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writeHex_bits32( a.high, stream );
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writeHex_bits64( a.low, stream );
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}
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#endif
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void writeHex_float_flags( uint8 flags, FILE *stream )
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{
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fputc( flags & float_flag_invalid ? 'v' : '.', stream );
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fputc( flags & float_flag_divbyzero ? 'z' : '.', stream );
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fputc( flags & float_flag_overflow ? 'o' : '.', stream );
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fputc( flags & float_flag_underflow ? 'u' : '.', stream );
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fputc( flags & float_flag_inexact ? 'x' : '.', stream );
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}
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