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402e7dde73
Taken from: https://github.com/freebsd/freebsd.git Commit id: d44ce30d3054a38723f89a161c5e003e64d1aaae
183 lines
4.3 KiB
C
183 lines
4.3 KiB
C
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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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