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Implement f8 comparsion functions
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‎softfloat/f8_eq.c

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/*============================================================================
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This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
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Package, Release 3d, by John R. Hauser.
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Copyright 2011, 2012, 2013, 2014, 2015 The Regents of the University of
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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 "platform.h"
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#include "internals.h"
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#include "softfloat.h"
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#include "specialize.h"
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bool f8_eq( float8_t a, float8_t b )
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{
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union ui8_f8 uA;
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uint_fast8_t uiA;
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union ui8_f8 uB;
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uint_fast8_t uiB;
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uA.f = a;
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uiA = uA.ui;
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uB.f = b;
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uiB = uB.ui;
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if ( isNaNF8UI( uiA ) || isNaNF8UI( uiB ) ) {
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softfloat_raiseFlags( softfloat_flag_invalid );
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return false;
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}
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return (uiA == uiB);
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}

‎softfloat/f8_le.c

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/*============================================================================
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This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
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Package, Release 3d, by John R. Hauser.
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6+
Copyright 2011, 2012, 2013, 2014, 2015 The Regents of the University of
7+
California. All rights reserved.
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9+
Redistribution and use in source and binary forms, with or without
10+
modification, are permitted provided that the following conditions are met:
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12+
1. Redistributions of source code must retain the above copyright notice,
13+
this list of conditions, and the following disclaimer.
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15+
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
17+
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
20+
be used to endorse or promote products derived from this software without
21+
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
25+
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
26+
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
28+
(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 "platform.h"
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#include "internals.h"
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#include "softfloat.h"
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#include "specialize.h"
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bool f8_le( float8_t a, float8_t b )
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{
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union ui8_f8 uA;
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uint_fast8_t uiA;
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union ui8_f8 uB;
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uint_fast8_t uiB;
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bool signA, signB;
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uA.f = a;
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uiA = uA.ui;
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uB.f = b;
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uiB = uB.ui;
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if ( isNaNF8UI( uiA ) || isNaNF8UI( uiB ) ) {
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softfloat_raiseFlags( softfloat_flag_invalid );
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return false;
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}
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signA = signF8UI( uiA );
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signB = signF8UI( uiB );
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return
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(signA != signB) ? signA
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: (uiA == uiB) || (signA ^ (uiA < uiB));
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}

‎softfloat/f8_lt.c

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/*============================================================================
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This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
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Package, Release 3d, by John R. Hauser.
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6+
Copyright 2011, 2012, 2013, 2014, 2015 The Regents of the University of
7+
California. All rights reserved.
8+
9+
Redistribution and use in source and binary forms, with or without
10+
modification, are permitted provided that the following conditions are met:
11+
12+
1. Redistributions of source code must retain the above copyright notice,
13+
this list of conditions, and the following disclaimer.
14+
15+
2. Redistributions in binary form must reproduce the above copyright notice,
16+
this list of conditions, and the following disclaimer in the documentation
17+
and/or other materials provided with the distribution.
18+
19+
3. Neither the name of the University nor the names of its contributors may
20+
be used to endorse or promote products derived from this software without
21+
specific prior written permission.
22+
23+
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
24+
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25+
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
26+
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
27+
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28+
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29+
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
30+
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31+
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32+
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 "platform.h"
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#include "internals.h"
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#include "softfloat.h"
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#include "specialize.h"
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bool f8_lt( float8_t a, float8_t b )
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{
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union ui8_f8 uA;
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uint_fast8_t uiA;
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union ui8_f8 uB;
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uint_fast8_t uiB;
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bool signA, signB;
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uA.f = a;
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uiA = uA.ui;
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uB.f = b;
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uiB = uB.ui;
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if ( isNaNF8UI( uiA ) || isNaNF8UI( uiB ) ) {
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softfloat_raiseFlags( softfloat_flag_invalid );
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return false;
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}
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signA = signF8UI( uiA );
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signB = signF8UI( uiB );
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return
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(signA != signB) ? signA
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: (uiA != uiB) && (signA ^ (uiA < uiB));
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}

‎softfloat/f8_lt_quiet.c

Lines changed: 63 additions & 0 deletions
Original file line numberDiff line numberDiff line change
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/*============================================================================
2+
3+
This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
4+
Package, Release 3d, by John R. Hauser.
5+
6+
Copyright 2011, 2012, 2013, 2014, 2015 The Regents of the University of
7+
California. All rights reserved.
8+
9+
Redistribution and use in source and binary forms, with or without
10+
modification, are permitted provided that the following conditions are met:
11+
12+
1. Redistributions of source code must retain the above copyright notice,
13+
this list of conditions, and the following disclaimer.
14+
15+
2. Redistributions in binary form must reproduce the above copyright notice,
16+
this list of conditions, and the following disclaimer in the documentation
17+
and/or other materials provided with the distribution.
18+
19+
3. Neither the name of the University nor the names of its contributors may
20+
be used to endorse or promote products derived from this software without
21+
specific prior written permission.
22+
23+
THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS", AND ANY
24+
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
25+
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE
26+
DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
27+
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
28+
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29+
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
30+
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31+
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
32+
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33+
34+
=============================================================================*/
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36+
#include <stdbool.h>
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#include <stdint.h>
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#include "platform.h"
39+
#include "internals.h"
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#include "softfloat.h"
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#include "specialize.h"
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bool f8_lt_quiet( float8_t a, float8_t b )
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{
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union ui8_f8 uA;
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uint_fast8_t uiA;
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union ui8_f8 uB;
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uint_fast8_t uiB;
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bool signA, signB;
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uA.f = a;
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uiA = uA.ui;
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uB.f = b;
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uiB = uB.ui;
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if ( isNaNF8UI( uiA ) || isNaNF8UI( uiB ) ) {
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return false;
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}
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signA = signF8UI( uiA );
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signB = signF8UI( uiB );
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return
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(signA != signB) ? signA
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: (uiA != uiB) && (signA ^ (uiA < uiB));
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}

‎softfloat/softfloat.h

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@@ -146,6 +146,10 @@ void i64_to_f128M( int64_t, float128_t * );
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/*----------------------------------------------------------------------------
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| 8-bit (half-precision) floating-point operations.
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*----------------------------------------------------------------------------*/
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bool f8_lt( float8_t, float8_t );
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bool f8_lt_quiet( float8_t, float8_t );
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bool f8_le( float8_t, float8_t );
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bool f8_eq( float8_t, float8_t );
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float8_t f8_mul( float8_t, float8_t );
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float8_t f8_div( float8_t, float8_t );
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float8_t f8_rsqrte7( float8_t );

‎softfloat/softfloat.mk.in

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@@ -48,6 +48,10 @@ softfloat_c_srcs = \
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f16_lt_quiet.c \
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f16_mulAdd.c \
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f16_mul.c \
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f8_le.c \
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f8_lt.c \
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f8_lt_quiet.c \
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f8_eq.c \
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f8_classify.c \
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f8_add.c \
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f8_sub.c \

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