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183 lines
4.3 KiB
183 lines
4.3 KiB
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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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