ieeefp/testfloat/systfloat.c

/* $NetBSD: systfloat.c,v 1.5 2001/03/22 12:22:18 ross Exp $ */

/* This is a derivative work. */

/*-
 * Copyright (c) 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Ross Harvey.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
===============================================================================

This C source file is part of TestFloat, Release 2a, a package of programs
for testing the correctness of floating-point arithmetic complying to the
IEC/IEEE Standard for Floating-Point.

Written by John R. Hauser.  More information is available through the Web
page `http://HTTP.CS.Berkeley.EDU/~jhauser/arithmetic/TestFloat.html'.

THIS SOFTWARE IS DISTRIBUTED AS IS, FOR FREE.  Although reasonable effort
has been made to avoid it, THIS SOFTWARE MAY CONTAIN FAULTS THAT WILL AT
TIMES RESULT IN INCORRECT BEHAVIOR.  USE OF THIS SOFTWARE IS RESTRICTED TO
PERSONS AND ORGANIZATIONS WHO CAN AND WILL TAKE FULL RESPONSIBILITY FOR ANY
AND ALL LOSSES, COSTS, OR OTHER PROBLEMS ARISING FROM ITS USE.

Derivative works are acceptable, even for commercial purposes, so long as
(1) they include prominent notice that the work is derivative, and (2) they
include prominent notice akin to these four paragraphs for those parts of
this code that are retained.

===============================================================================
*/

#include <sys/cdefs.h>
#ifndef __lint
__RCSID("$NetBSD: systfloat.c,v 1.5 2001/03/22 12:22:18 ross Exp $");
#endif

#include <math.h>
#include <ieeefp.h>
#include "milieu.h"
#include "softfloat.h"
#include "systfloat.h"
#include "systflags.h"
#include "systmodes.h"

fp_except
syst_float_flags_clear(void)
{
    return fpsetsticky(0)
	& (FP_X_IMP | FP_X_UFL | FP_X_OFL | FP_X_DZ | FP_X_INV);
}

void
syst_float_set_rounding_mode(fp_rnd direction)
{
    fpsetround(direction);
    fpsetmask(0);
}

float32 syst_int32_to_float32( int32 a )
{
    float32 z;

    *( (float *) &z ) = a;
    return z;

}

float64 syst_int32_to_float64( int32 a )
{
    float64 z;

    *( (double *) &z ) = a;
    return z;

}

#if defined( FLOATX80 ) && defined( LONG_DOUBLE_IS_FLOATX80 )

floatx80 syst_int32_to_floatx80( int32 a )
{
    floatx80 z;

    *( (long double *) &z ) = a;
    return z;

}

#endif

#if defined( FLOAT128 ) && defined( LONG_DOUBLE_IS_FLOAT128 )

float128 syst_int32_to_float128( int32 a )
{
    float128 z;

    *( (long double *) &z ) = a;
    return z;

}

#endif

#ifdef BITS64

float32 syst_int64_to_float32( int64 a )
{
    float32 z;

    *( (float *) &z ) = a;
    return z;

}

float64 syst_int64_to_float64( int64 a )
{
    float64 z;

    *( (double *) &z ) = a;
    return z;

}

#if defined( FLOATX80 ) && defined( LONG_DOUBLE_IS_FLOATX80 )

floatx80 syst_int64_to_floatx80( int64 a )
{
    floatx80 z;

    *( (long double *) &z ) = a;
    return z;

}

#endif

#if defined( FLOAT128 ) && defined( LONG_DOUBLE_IS_FLOAT128 )

float128 syst_int64_to_float128( int64 a )
{
    float128 z;

    *( (long double *) &z ) = a;
    return z;

}

#endif

#endif

int32 syst_float32_to_int32_round_to_zero( float32 a )
{

    return *( (float *) &a );

}

#ifdef BITS64

int64 syst_float32_to_int64_round_to_zero( float32 a )
{

    return *( (float *) &a );

}

#endif

float64 syst_float32_to_float64( float32 a )
{
    float64 z;

    *( (double *) &z ) = *( (float *) &a );
    return z;

}

#if defined( FLOATX80 ) && defined( LONG_DOUBLE_IS_FLOATX80 )

floatx80 syst_float32_to_floatx80( float32 a )
{
    floatx80 z;

    *( (long double *) &z ) = *( (float *) &a );
    return z;

}

#endif

#if defined( FLOAT128 ) && defined( LONG_DOUBLE_IS_FLOAT128 )

float128 syst_float32_to_float128( float32 a )
{
    float128 z;

    *( (long double *) &z ) = *( (float *) &a );
    return z;

}

#endif

float32 syst_float32_add( float32 a, float32 b )
{
    float32 z;

    *( (float *) &z ) = *( (float *) &a ) + *( (float *) &b );
    return z;

}

float32 syst_float32_sub( float32 a, float32 b )
{
    float32 z;

    *( (float *) &z ) = *( (float *) &a ) - *( (float *) &b );
    return z;

}

float32 syst_float32_mul( float32 a, float32 b )
{
    float32 z;

    *( (float *) &z ) = *( (float *) &a ) * *( (float *) &b );
    return z;

}

float32 syst_float32_div( float32 a, float32 b )
{
    float32 z;

    *( (float *) &z ) = *( (float *) &a ) / *( (float *) &b );
    return z;

}

flag syst_float32_eq( float32 a, float32 b )
{

    return ( *( (float *) &a ) == *( (float *) &b ) );

}

flag syst_float32_le( float32 a, float32 b )
{

    return ( *( (float *) &a ) <= *( (float *) &b ) );

}

flag syst_float32_lt( float32 a, float32 b )
{

    return ( *( (float *) &a ) < *( (float *) &b ) );

}

int32 syst_float64_to_int32_round_to_zero( float64 a )
{

    return *( (double *) &a );

}

#ifdef BITS64

int64 syst_float64_to_int64_round_to_zero( float64 a )
{

    return *( (double *) &a );

}

#endif

float32 syst_float64_to_float32( float64 a )
{
    float32 z;

    *( (float *) &z ) = *( (double *) &a );
    return z;

}

#if defined( FLOATX80 ) && defined( LONG_DOUBLE_IS_FLOATX80 )

floatx80 syst_float64_to_floatx80( float64 a )
{
    floatx80 z;

    *( (long double *) &z ) = *( (double *) &a );
    return z;

}

#endif

#if defined( FLOAT128 ) && defined( LONG_DOUBLE_IS_FLOAT128 )

float128 syst_float64_to_float128( float64 a )
{
    float128 z;

    *( (long double *) &z ) = *( (double *) &a );
    return z;

}

#endif

float64 syst_float64_add( float64 a, float64 b )
{
    float64 z;

    *( (double *) &z ) = *( (double *) &a ) + *( (double *) &b );
    return z;

}

float64 syst_float64_sub( float64 a, float64 b )
{
    float64 z;

    *( (double *) &z ) = *( (double *) &a ) - *( (double *) &b );
    return z;

}

float64 syst_float64_mul( float64 a, float64 b )
{
    float64 z;

    *( (double *) &z ) = *( (double *) &a ) * *( (double *) &b );
    return z;

}

float64 syst_float64_div( float64 a, float64 b )
{
    float64 z;

    *( (double *) &z ) = *( (double *) &a ) / *( (double *) &b );
    return z;

}

float64 syst_float64_sqrt( float64 a )
{
    float64 z;

    *( (double *) &z ) = sqrt( *( (double *) &a ) );
    return z;

}

flag syst_float64_eq( float64 a, float64 b )
{

    return ( *( (double *) &a ) == *( (double *) &b ) );

}

flag syst_float64_le( float64 a, float64 b )
{

    return ( *( (double *) &a ) <= *( (double *) &b ) );

}

flag syst_float64_lt( float64 a, float64 b )
{

    return ( *( (double *) &a ) < *( (double *) &b ) );

}

#if defined( FLOATX80 ) && defined( LONG_DOUBLE_IS_FLOATX80 )

int32 syst_floatx80_to_int32_round_to_zero( floatx80 a )
{

    return *( (long double *) &a );

}

#ifdef BITS64

int64 syst_floatx80_to_int64_round_to_zero( floatx80 a )
{

    return *( (long double *) &a );

}

#endif

float32 syst_floatx80_to_float32( floatx80 a )
{
    float32 z;

    *( (float *) &z ) = *( (long double *) &a );
    return z;

}

float64 syst_floatx80_to_float64( floatx80 a )
{
    float64 z;

    *( (double *) &z ) = *( (long double *) &a );
    return z;

}

floatx80 syst_floatx80_add( floatx80 a, floatx80 b )
{
    floatx80 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) + *( (long double *) &b );
    return z;

}

floatx80 syst_floatx80_sub( floatx80 a, floatx80 b )
{
    floatx80 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) - *( (long double *) &b );
    return z;

}

floatx80 syst_floatx80_mul( floatx80 a, floatx80 b )
{
    floatx80 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) * *( (long double *) &b );
    return z;

}

floatx80 syst_floatx80_div( floatx80 a, floatx80 b )
{
    floatx80 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) / *( (long double *) &b );
    return z;

}

flag syst_floatx80_eq( floatx80 a, floatx80 b )
{

    return ( *( (long double *) &a ) == *( (long double *) &b ) );

}

flag syst_floatx80_le( floatx80 a, floatx80 b )
{

    return ( *( (long double *) &a ) <= *( (long double *) &b ) );

}

flag syst_floatx80_lt( floatx80 a, floatx80 b )
{

    return ( *( (long double *) &a ) < *( (long double *) &b ) );

}

#endif

#if defined( FLOAT128 ) && defined( LONG_DOUBLE_IS_FLOAT128 )

int32 syst_float128_to_int32_round_to_zero( float128 a )
{

    return *( (long double *) &a );

}

#ifdef BITS64

int64 syst_float128_to_int64_round_to_zero( float128 a )
{

    return *( (long double *) &a );

}

#endif

float32 syst_float128_to_float32( float128 a )
{
    float32 z;

    *( (float *) &z ) = *( (long double *) &a );
    return z;

}

float64 syst_float128_to_float64( float128 a )
{
    float64 z;

    *( (double *) &z ) = *( (long double *) &a );
    return z;

}

float128 syst_float128_add( float128 a, float128 b )
{
    float128 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) + *( (long double *) &b );
    return z;

}

float128 syst_float128_sub( float128 a, float128 b )
{
    float128 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) - *( (long double *) &b );
    return z;

}

float128 syst_float128_mul( float128 a, float128 b )
{
    float128 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) * *( (long double *) &b );
    return z;

}

float128 syst_float128_div( float128 a, float128 b )
{
    float128 z;

    *( (long double *) &z ) =
        *( (long double *) &a ) / *( (long double *) &b );
    return z;

}

flag syst_float128_eq( float128 a, float128 b )
{

    return ( *( (long double *) &a ) == *( (long double *) &b ) );

}

flag syst_float128_le( float128 a, float128 b )
{

    return ( *( (long double *) &a ) <= *( (long double *) &b ) );

}

flag syst_float128_lt( float128 a, float128 b )
{

    return ( *( (long double *) &a ) < *( (long double *) &b ) );

}

#endif