source: mainline/uspace/lib/softfloat/generic/softfloat.c@ 88d5c1e

/*
 * Copyright (c) 2005 Josef Cejka
 * Copyright (c) 2011 Petr Koupy
 * 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.
 */

/** @addtogroup softfloat generic
 * @ingroup sfl
 * @brief Architecture independent parts of FPU software emulation library.
 * @{
 */
/** @file Softfloat API.
 */

#include <softfloat.h>
#include <sftypes.h>

#include <add.h>
#include <sub.h>
#include <mul.h>
#include <div.h>

#include <conversion.h>
#include <comparison.h>
#include <other.h>

/* Arithmetic functions */

float __addsf3(float a, float b)
{
        float_t fa;
        float_t fb;
        float_t res;
        
        fa.val = a;
        fb.val = b;
        
        if (fa.data.parts.sign != fb.data.parts.sign) {
                if (fa.data.parts.sign) {
                        fa.data.parts.sign = 0;
                        res.data = sub_float(fb.data, fa.data);
                        
                        return res.val;
                }
                
                fb.data.parts.sign = 0;
                res.data = sub_float(fa.data, fb.data);
                
                return res.val;
        }
        
        res.data = add_float(fa.data, fb.data);
        return res.val;
}

double __adddf3(double a, double b)
{
        double_t da;
        double_t db;
        double_t res;
        
        da.val = a;
        db.val = b;
        
        if (da.data.parts.sign != db.data.parts.sign) {
                if (da.data.parts.sign) {
                        da.data.parts.sign = 0;
                        res.data = sub_double(db.data, da.data);
                        
                        return res.val;
                }
                
                db.data.parts.sign = 0;
                res.data = sub_double(da.data, db.data);
                
                return res.val;
        }
        
        res.data = add_double(da.data, db.data);
        return res.val;
}

long double __addtf3(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        long_double_t res;
        
        ta.val = a;
        tb.val = b;
        
        if (ta.data.parts.sign != tb.data.parts.sign) {
                if (ta.data.parts.sign) {
                        ta.data.parts.sign = 0;
                        res.data = sub_long_double(tb.data, ta.data);
                        
                        return res.val;
                }
                
                tb.data.parts.sign = 0;
                res.data = sub_long_double(ta.data, tb.data);
                
                return res.val;
        }
        
        res.data = add_long_double(ta.data, tb.data);
        return res.val;
}

float __subsf3(float a, float b)
{
        float_t fa;
        float_t fb;
        float_t res;
        
        fa.val = a;
        fb.val = b;
        
        if (fa.data.parts.sign != fb.data.parts.sign) {
                fb.data.parts.sign = !fb.data.parts.sign;
                res.data = add_float(fa.data, fb.data);
                
                return res.val;
        }
        
        res.data = sub_float(fa.data, fb.data);
        return res.val;
}

double __subdf3(double a, double b)
{
        double_t da;
        double_t db;
        double_t res;
        
        da.val = a;
        db.val = b;
        
        if (da.data.parts.sign != db.data.parts.sign) {
                db.data.parts.sign = !db.data.parts.sign;
                res.data = add_double(da.data, db.data);
                
                return res.val;
        }
        
        res.data = sub_double(da.data, db.data);
        return res.val;
}

long double __subtf3(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        long_double_t res;
        
        ta.val = a;
        tb.val = b;
        
        if (ta.data.parts.sign != tb.data.parts.sign) {
                tb.data.parts.sign = !tb.data.parts.sign;
                res.data = add_long_double(ta.data, tb.data);
                
                return res.val;
        }
        
        res.data = sub_long_double(ta.data, tb.data);
        return res.val;
}

float __mulsf3(float a, float b)
{
        float_t fa;
        float_t fb;
        float_t res;
        
        fa.val = a;
        fb.val = b;
        
        res.data = mul_float(fa.data, fb.data);
        return res.val;
}

double __muldf3(double a, double b)
{
        double_t da;
        double_t db;
        double_t res;
        
        da.val = a;
        db.val = b;
        
        res.data = mul_double(da.data, db.data);
        return res.val;
}

long double __multf3(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        long_double_t res;
        
        ta.val = a;
        tb.val = b;
        
        res.data = mul_long_double(ta.data, tb.data);
        return res.val;
}

float __divsf3(float a, float b)
{
        float_t fa;
        float_t fb;
        float_t res;
        
        fa.val = a;
        fb.val = b;
        
        res.data = div_float(fa.data, fb.data);
        return res.val;
}

double __divdf3(double a, double b)
{
        double_t da;
        double_t db;
        double_t res;
        
        da.val = a;
        db.val = b;
        
        res.data = div_double(da.data, db.data);
        return res.val;
}

long double __divtf3(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        long_double_t res;
        
        ta.val = a;
        tb.val = b;
        
        res.data = div_long_double(ta.data, tb.data);
        return res.val;
}

float __negsf2(float a)
{
        float_t fa;
        
        fa.val = a;
        fa.data.parts.sign = !fa.data.parts.sign;
        
        return fa.val;
}

double __negdf2(double a)
{
        double_t da;
        
        da.val = a;
        da.data.parts.sign = !da.data.parts.sign;
        
        return da.val;
}

long double __negtf2(long double a)
{
        long_double_t ta;
        
        ta.val = a;
        ta.data.parts.sign = !ta.data.parts.sign;
        
        return ta.val;
}

/* Conversion functions */

double __extendsfdf2(float a)
{
        float_t fa;
        double_t res;
        
        fa.val = a;
        res.data = float_to_double(fa.data);
        
        return res.val;
}

long double __extendsftf2(float a)
{
        float_t fa;
        long_double_t res;
        
        fa.val = a;
        res.data = float_to_long_double(fa.data);
        
        return res.val;
}

long double __extenddftf2(double a)
{
        double_t da;
        long_double_t res;
        
        da.val = a;
        res.data = double_to_long_double(da.data);
        
        return res.val;
}

float __truncdfsf2(double a)
{
        double_t da;
        float_t res;
        
        da.val = a;
        res.data = double_to_float(da.data);
        
        return res.val;
}

float __trunctfsf2(long double a)
{
        long_double_t ta;
        float_t res;
        
        ta.val = a;
        res.data = long_double_to_float(ta.data);
        
        return res.val;
}

double __trunctfdf2(long double a)
{
        long_double_t ta;
        double_t res;
        
        ta.val = a;
        res.data = long_double_to_double(ta.data);
        
        return res.val;
}

int __fixsfsi(float a)
{
        float_t fa;
        
        fa.val = a;
        return float_to_int(fa.data);
}

int __fixdfsi(double a)
{
        double_t da;
        
        da.val = a;
        return double_to_int(da.data);
}

int __fixtfsi(long double a)
{
        long_double_t ta;
        
        ta.val = a;
        return long_double_to_int(ta.data);
}
 
long __fixsfdi(float a)
{
        float_t fa;
        
        fa.val = a;
        return float_to_long(fa.data);
}

long __fixdfdi(double a)
{
        double_t da;
        
        da.val = a;
        return double_to_long(da.data);
}

long __fixtfdi(long double a)
{
        long_double_t ta;
        
        ta.val = a;
        return long_double_to_long(ta.data);
}
 
long long __fixsfti(float a)
{
        float_t fa;
        
        fa.val = a;
        return float_to_llong(fa.data);
}

long long __fixdfti(double a)
{
        double_t da;
        
        da.val = a;
        return double_to_llong(da.data);
}

long long __fixtfti(long double a)
{
        long_double_t ta;
        
        ta.val = a;
        return long_double_to_llong(ta.data);
}

unsigned int __fixunssfsi(float a)
{
        float_t fa;
        
        fa.val = a;
        return float_to_uint(fa.data);
}

unsigned int __fixunsdfsi(double a)
{
        double_t da;
        
        da.val = a;
        return double_to_uint(da.data);
}

unsigned int __fixunstfsi(long double a)
{
        long_double_t ta;
        
        ta.val = a;
        return long_double_to_uint(ta.data);
}
 
unsigned long __fixunssfdi(float a)
{
        float_t fa;
        
        fa.val = a;
        return float_to_ulong(fa.data);
}

unsigned long __fixunsdfdi(double a)
{
        double_t da;
        
        da.val = a;
        return double_to_ulong(da.data);
}

unsigned long __fixunstfdi(long double a)
{
        long_double_t ta;
        
        ta.val = a;
        return long_double_to_ulong(ta.data);
}
 
unsigned long long __fixunssfti(float a)
{
        float_t fa;
        
        fa.val = a;
        return float_to_ullong(fa.data);
}

unsigned long long __fixunsdfti(double a)
{
        double_t da;
        
        da.val = a;
        return double_to_ullong(da.data);
}

unsigned long long __fixunstfti(long double a)
{
        long_double_t ta;
        
        ta.val = a;
        return long_double_to_ullong(ta.data);
}
 
float __floatsisf(int i)
{
        float_t res;
        
        res.data = int_to_float(i);
        return res.val;
}

double __floatsidf(int i)
{
        double_t res;
        
        res.data = int_to_double(i);
        return res.val;
}

long double __floatsitf(int i)
{
        long_double_t res;
        
        res.data = int_to_long_double(i);
        return res.val;
}
 
float __floatdisf(long i)
{
        float_t res;
        
        res.data = long_to_float(i);
        return res.val;
}

double __floatdidf(long i)
{
        double_t res;
        
        res.data = long_to_double(i);
        return res.val;
}

long double __floatditf(long i)
{
        long_double_t res;
        
        res.data = long_to_long_double(i);
        return res.val;
}

float __floattisf(long long i)
{
        float_t res;
        
        res.data = llong_to_float(i);
        return res.val;
}

double __floattidf(long long i)
{
        double_t res;
        
        res.data = llong_to_double(i);
        return res.val;
}

long double __floattitf(long long i)
{
        long_double_t res;
        
        res.data = llong_to_long_double(i);
        return res.val;
}

float __floatunsisf(unsigned int i)
{
        float_t res;
        
        res.data = uint_to_float(i);
        return res.val;
}

double __floatunsidf(unsigned int i)
{
        double_t res;
        
        res.data = uint_to_double(i);
        return res.val;
}

long double __floatunsitf(unsigned int i)
{
        long_double_t res;
        
        res.data = uint_to_long_double(i);
        return res.val;
}
 
float __floatundisf(unsigned long i)
{
        float_t res;
        
        res.data = ulong_to_float(i);
        return res.val;
}

double __floatundidf(unsigned long i)
{
        double_t res;
        
        res.data = ulong_to_double(i);
        return res.val;
}

long double __floatunditf(unsigned long i)
{
        long_double_t res;
        
        res.data = ulong_to_long_double(i);
        return res.val;
}
 
float __floatuntisf(unsigned long long i)
{
        float_t res;
        
        res.data = ullong_to_float(i);
        return res.val;
}

double __floatuntidf(unsigned long long i)
{
        double_t res;
        
        res.data = ullong_to_double(i);
        return res.val;
}

long double __floatuntitf(unsigned long long i)
{
        long_double_t res;
        
        res.data = ullong_to_long_double(i);
        return res.val;
}

/* Comparison functions */

int __cmpsf2(float a, float b) 
{
        float_t fa;
        float_t fb;
        
        fa.val = a;
        fb.val = b;
        
        if ((is_float_nan(fa.data)) || (is_float_nan(fb.data))) {
                /* no special constant for unordered - maybe signaled? */
                return 1;
        }
        
        if (is_float_eq(fa.data, fb.data))
                return 0;
        
        if (is_float_lt(fa.data, fb.data))
                return -1;
        
        return 1;
}

int __cmpdf2(double a, double b)
{
        double_t da;
        double_t db;
        
        da.val = a;
        db.val = b;
        
        if ((is_double_nan(da.data)) || (is_double_nan(db.data))) {
                /* no special constant for unordered - maybe signaled? */
                return 1;
        }
        
        if (is_double_eq(da.data, db.data))
                return 0;
        
        if (is_double_lt(da.data, db.data))
                return -1;
        
        return 1;
}

int __cmptf2(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = a;
        tb.val = b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data))) {
                /* no special constant for unordered - maybe signaled? */
                return 1;
        }
        
        if (is_long_double_eq(ta.data, tb.data))
                return 0;
        
        if (is_long_double_lt(ta.data, tb.data))
                return -1;
        
        return 1;
}

int __unordsf2(float a, float b)
{
        float_t fa;
        float_t fb;
        
        fa.val = a;
        fb.val = b;
        
        return ((is_float_nan(fa.data)) || (is_float_nan(fb.data)));
}

int __unorddf2(double a, double b)
{
        double_t da;
        double_t db;
        
        da.val = a;
        db.val = b;
        
        return ((is_double_nan(da.data)) || (is_double_nan(db.data)));
}

int __unordtf2(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = a;
        tb.val = b;
        
        return ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)));
}

int __eqsf2(float a, float b)
{
        float_t fa;
        float_t fb;
        
        fa.val = a;
        fb.val = b;
        
        if ((is_float_nan(fa.data)) || (is_float_nan(fb.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        return is_float_eq(fa.data, fb.data) - 1;
}

int __eqdf2(double a, double b)
{
        double_t da;
        double_t db;
        
        da.val = a;
        db.val = b;
        
        if ((is_double_nan(da.data)) || (is_double_nan(db.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        return is_double_eq(da.data, db.data) - 1;
}

int __eqtf2(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = a;
        tb.val = b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        return is_long_double_eq(ta.data, tb.data) - 1;
}

int __nesf2(float a, float b)
{
        /* strange behavior, but it was in gcc documentation */
        return __eqsf2(a, b);
}

int __nedf2(double a, double b)
{
        /* strange behavior, but it was in gcc documentation */
        return __eqdf2(a, b);
}

int __netf2(long double a, long double b)
{
        /* strange behavior, but it was in gcc documentation */
        return __eqtf2(a, b);
}

int __gesf2(float a, float b)
{
        float_t fa;
        float_t fb;
        
        fa.val = a;
        fb.val = b;
        
        if ((is_float_nan(fa.data)) || (is_float_nan(fb.data))) {
                // TODO: sigNaNs
                return -1;
        }
        
        if (is_float_eq(fa.data, fb.data))
                return 0;
        
        if (is_float_gt(fa.data, fb.data))
                return 1;
        
        return -1;
}

int __gedf2(double a, double b)
{
        double_t da;
        double_t db;
        
        da.val = a;
        db.val = b;
        
        if ((is_double_nan(da.data)) || (is_double_nan(db.data))) {
                // TODO: sigNaNs
                return -1;
        }
        
        if (is_double_eq(da.data, db.data))
                return 0;
        
        if (is_double_gt(da.data, db.data))
                return 1;
        
        return -1;
}

int __getf2(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = a;
        tb.val = b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data))) {
                // TODO: sigNaNs
                return -1;
        }
        
        if (is_long_double_eq(ta.data, tb.data))
                return 0;
        
        if (is_long_double_gt(ta.data, tb.data))
                return 1;
        
        return -1;
}

int __ltsf2(float a, float b)
{
        float_t fa;
        float_t fb;
        
        fa.val = a;
        fb.val = b;
        
        if ((is_float_nan(fa.data)) || (is_float_nan(fb.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        if (is_float_lt(fa.data, fb.data))
                return -1;
        
        return 0;
}

int __ltdf2(double a, double b)
{
        double_t da;
        double_t db;
        
        da.val = a;
        db.val = b;
        
        if ((is_double_nan(da.data)) || (is_double_nan(db.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        if (is_double_lt(da.data, db.data))
                return -1;
        
        return 0;
}

int __lttf2(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = a;
        tb.val = b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        if (is_long_double_lt(ta.data, tb.data))
                return -1;
        
        return 0;
}

int __lesf2(float a, float b)
{
        float_t fa;
        float_t fb;
        
        fa.val = a;
        fb.val = b;
        
        if ((is_float_nan(fa.data)) || (is_float_nan(fb.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        if (is_float_eq(fa.data, fb.data))
                return 0;
        
        if (is_float_lt(fa.data, fb.data))
                return -1;
        
        return 1;
}

int __ledf2(double a, double b)
{
        double_t da;
        double_t db;
        
        da.val = a;
        db.val = b;
        
        if ((is_double_nan(da.data)) || (is_double_nan(db.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        if (is_double_eq(da.data, db.data))
                return 0;
        
        if (is_double_lt(da.data, db.data))
                return -1;
        
        return 1;
}

int __letf2(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = a;
        tb.val = b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data))) {
                // TODO: sigNaNs
                return 1;
        }
        
        if (is_long_double_eq(ta.data, tb.data))
                return 0;
        
        if (is_long_double_lt(ta.data, tb.data))
                return -1;
        
        return 1;
}

int __gtsf2(float a, float b)
{
        float_t fa;
        float_t fb;
        
        fa.val = a;
        fb.val = b;
        
        if ((is_float_nan(fa.data)) || (is_float_nan(fb.data))) {
                // TODO: sigNaNs
                return -1;
        }
        
        if (is_float_gt(fa.data, fb.data))
                return 1;
        
        return 0;
}

int __gtdf2(double a, double b)
{
        double_t da;
        double_t db;
        
        da.val = a;
        db.val = b;
        
        if ((is_double_nan(da.data)) || (is_double_nan(db.data))) {
                // TODO: sigNaNs
                return -1;
        }
        
        if (is_double_gt(da.data, db.data))
                return 1;
        
        return 0;
}

int __gttf2(long double a, long double b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = a;
        tb.val = b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data))) {
                // TODO: sigNaNs
                return -1;
        }
        
        if (is_long_double_gt(ta.data, tb.data))
                return 1;
        
        return 0;
}

/* SPARC quadruple-precision wrappers */

void _Qp_add(long double *c, long double *a, long double *b)
{
        *c = __addtf3(*a, *b);
}

void _Qp_sub(long double *c, long double *a, long double *b)
{
        *c = __subtf3(*a, *b);
}

void _Qp_mul(long double *c, long double *a, long double *b)
{
        *c = __multf3(*a, *b);
}

void _Qp_div(long double *c, long double *a, long double *b)
{
        *c = __divtf3(*a, *b);
}

void _Qp_neg(long double *c, long double *a)
{
        *c = __negtf2(*a);
}

void _Qp_stoq(long double *c, float a)
{
        *c = __extendsftf2(a);
}

void _Qp_dtoq(long double *c, double a)
{
        *c = __extenddftf2(a);
}

float _Qp_qtos(long double *a)
{
        return __trunctfsf2(*a);
}

double _Qp_qtod(long double *a)
{
        return __trunctfdf2(*a);
}

int _Qp_qtoi(long double *a)
{
        return __fixtfsi(*a);
}

unsigned int _Qp_qtoui(long double *a)
{
        return __fixunstfsi(*a);
}

long _Qp_qtox(long double *a)
{
        return __fixtfdi(*a);
}

unsigned long _Qp_qtoux(long double *a)
{
        return __fixunstfdi(*a);
}

void _Qp_itoq(long double *c, int a)
{
        *c = __floatsitf(a);
}

void _Qp_uitoq(long double *c, unsigned int a)
{
        *c = __floatunsitf(a);
}

void _Qp_xtoq(long double *c, long a)
{
        *c = __floatditf(a);
}

void _Qp_uxtoq(long double *c, unsigned long a)
{
        *c = __floatunditf(a);
}

int _Qp_cmp(long double *a, long double *b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = *a;
        tb.val = *b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)))
                return 3;
        
        if (is_long_double_eq(ta.data, tb.data))
                return 0;
        
        if (is_long_double_lt(ta.data, tb.data))
                return 1;
        
        return 2;
}

int _Qp_cmpe(long double *a, long double *b)
{
        /* strange, but is defined this way in SPARC Compliance Definition */
        return _Qp_cmp(a, b);
}

int _Qp_feq(long double *a, long double *b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = *a;
        tb.val = *b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)))
                return 0;
        
        return is_long_double_eq(ta.data, tb.data);
}

int _Qp_fge(long double *a, long double *b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = *a;
        tb.val = *b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)))
                return 0;
        
        return is_long_double_eq(ta.data, tb.data) ||
            is_long_double_gt(ta.data, tb.data);
}

int _Qp_fgt(long double *a, long double *b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = *a;
        tb.val = *b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)))
                return 0;
        
        return is_long_double_gt(ta.data, tb.data);
}

int _Qp_fle(long double*a, long double *b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = *a;
        tb.val = *b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)))
                return 0;
        
        return is_long_double_eq(ta.data, tb.data) ||
            is_long_double_lt(ta.data, tb.data);
}

int _Qp_flt(long double *a, long double *b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = *a;
        tb.val = *b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)))
                return 0;
        
        return is_long_double_lt(ta.data, tb.data);
}

int _Qp_fne(long double *a, long double *b)
{
        long_double_t ta;
        long_double_t tb;
        
        ta.val = *a;
        tb.val = *b;
        
        if ((is_long_double_nan(ta.data)) || (is_long_double_nan(tb.data)))
                return 0;
        
        return !is_long_double_eq(ta.data, tb.data);
}

/** @}
 */