Subversion Repositories HelenOS-historic

/*

 * Copyright (C) 2005 Josef Cejka

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - 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.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.

 */

#ifndef __SOFTFLOAT_H__

#define __SOFTFLOAT_H__

typedef union {

    float f;

    struct  {

        #ifdef __BIG_ENDIAN__

        __u32 sign:1;

        __u32 exp:8;

        __u32 mantisa:23;

        #elif defined __LITTLE_ENDIAN__

        __u32 mantisa:23;

        __u32 exp:8;

        __u32 sign:1;

        #else 

        #error "Unknown endians."

        #endif

        } parts __attribute__ ((packed));

    } float32;

typedef union {

    double d;

    struct  {

        #ifdef __BIG_ENDIAN__

        __u64 sign:1;

        __u64 exp:11;

        __u64 mantisa:52;

        #elif defined __LITTLE_ENDIAN__

        __u64 mantisa:52;

        __u64 exp:11;

        __u64 sign:1;

        #else 

        #error "Unknown endians."

        #endif

        } parts __attribute__ ((packed));

    } float64;

#define FLOAT32_MAX 0x7f800000

#define FLOAT32_MIN 0xff800000

#define FLOAT64_MAX

#define FLOAT64_MIN

#define FLOAT32_BIAS 0xF7

#define FLOAT64_BIAS 0x3FF

#define FLOAT80_BIAS 0x3FFF

float __addsf3(float a, float b);

double __adddf3(double a, double b);

long double __addtf3(long double a, long double b);

long double __addxf3(long double a, long double b);

float __subsf3(float a, float b);

double __subdf3(double a, double b);

long double __subtf3(long double a, long double b);

long double __subxf3(long double a, long double b);

float __mulsf3(float a, float b);

double __muldf3(double a, double b);

long double __multf3(long double a, long double b);

long double __mulxf3(long double a, long double b);

float __divsf3(float a, float b);

double __divdf3(double a, double b);

long double __divtf3(long double a, long double b);

long double __divxf3(long double a, long double b);

float __negsf2(float a);

double __negdf2(double a);

long double __negtf2(long double a);

long double __negxf2(long double a);

double __extendsfdf2(float a);

long double __extendsftf2(float a);

long double __extendsfxf2(float a);

long double __extenddftf2(double a);

long double __extenddfxf2(double a);

double __truncxfdf2(long double a);

double __trunctfdf2(long double a);

float __truncxfsf2(long double a);

float __trunctfsf2(long double a);

float __truncdfsf2(double a);

int __fixsfsi(float a);

int __fixdfsi(double a);

int __fixtfsi(long double a);

int __fixxfsi(long double a);

long __fixsfdi(float a);

long __fixdfdi(double a);

long __fixtfdi(long double a);

long __fixxfdi(long double a);

long long __fixsfti(float a);

long long __fixdfti(double a);

long long __fixtfti(long double a);

long long __fixxfti(long double a);

unsigned int __fixunssfsi(float a);

unsigned int __fixunsdfsi(double a);

unsigned int __fixunstfsi(long double a);

unsigned int __fixunsxfsi(long double a);

unsigned long __fixunssfdi(float a);

unsigned long __fixunsdfdi(double a);

unsigned long __fixunstfdi(long double a);

unsigned long __fixunsxfdi(long double a);

unsigned long long __fixunssfti(float a);

unsigned long long __fixunsdfti(double a);

unsigned long long __fixunstfti(long double a);

unsigned long long __fixunsxfti(long double a);

float __floatsisf(int i);

double __floatsidf(int i);

long double __floatsitf(int i);

long double __floatsixf(int i);

float __floatdisf(long i);

double __floatdidf(long i);

long double __floatditf(long i);

long double __floatdixf(long i);

float __floattisf(long long i);

double __floattidf(long long i);

long double __floattitf(long long i);

long double __floattixf(long long i);

int __cmpsf2(float a, float b);

int __cmpdf2(double a, double b);

int __cmptf2(long double a, long double b);

int __unordsf2(float a, float b);

int __unorddf2(double a, double b);

int __unordtf2(long double a, long double b);

int __eqsf2(float a, float b);

int __eqdf2(double a, double b);

int __eqtf2(long double a, long double b);

int __nesf2(float a, float b);

int __nedf2(double a, double b);

int __netf2(long double a, long double b);

int __gesf2(float a, float b);

int __gedf2(double a, double b);

int __getf2(long double a, long double b);

int __ltsf2(float a, float b);

int __ltdf2(double a, double b);

int __lttf2(long double a, long double b);

int __lesf2(float a, float b);

int __ledf2(double a, double b);

int __letf2(long double a, long double b);

int __gtsf2(float a, float b);

int __gtdf2(double a, double b);

int __gttf2(long double a, long double b);

#endif