sincos_special.c

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MIT License
-----------
 
Copyright (c) 2002-2019 Advanced Micro Devices, Inc.
 
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#include <fpieee.h>
#include <excpt.h>
#include <float.h>
#include <math.h>
#include <errno.h>
 
#include "libm_new.h"
 
double _sincos_special(double x, char *name, unsigned int operation)
{
    UT64 xu;
    unsigned int is_snan;
 
    xu.f64 = x;
 
    if((xu.u64 & INF_POS_64) == INF_POS_64)
    {
        // x is Inf or NaN
        if((xu.u64 & MANTISSA_MASK_64) == 0x0)
        {
            // x is Inf
            xu.u64 = IND_64;
            _handle_error(name, operation, xu.u64, _DOMAIN, AMD_F_INVALID, EDOM, x, 0, 1);
        }
        else 
        {
            // x is NaN
            is_snan = (((xu.u64 & QNAN_MASK_64) == QNAN_MASK_64) ? 0 : 1);
            if(is_snan)
            {
                xu.u64 |= QNAN_MASK_64;
            }
            _handle_error(name, operation, xu.u64, _DOMAIN, 0, EDOM, x, 0, 1);
        }
    }
 
    return xu.f64;
}
 
float _sincosf_special(float x, char *name, unsigned int operation)
{
    UT64 xu;
    unsigned int is_snan;
 
    xu.u64    = 0;
    xu.f32[0] = x;
 
    if((xu.u32[0] & INF_POS_32) == INF_POS_32)
    {
        // x is Inf or NaN
        if((xu.u32[0] & MANTISSA_MASK_32) == 0x0)
        {
            // x is Inf 
            xu.u32[0] = IND_32; 
            _handle_errorf(name, operation, xu.u64, _DOMAIN, AMD_F_INVALID, EDOM, x, 0, 1);
        }
        else
        {
            // x is NaN
            is_snan = (((xu.u32[0] & QNAN_MASK_32) == QNAN_MASK_32) ? 0 : 1);
            if(is_snan) 
            {
                xu.u32[0] |= QNAN_SET_32;
                _handle_errorf(name, operation, xu.u64, _DOMAIN, AMD_F_INVALID, EDOM, x, 0, 1);
            }
            else 
            {
                _handle_errorf(name, operation, xu.u64, _DOMAIN, 0, EDOM, x, 0, 1);
            }
        }
    }
 
    return xu.f32[0];
}
 
float _sinf_special(float x)
{
    return _sincosf_special(x, "sinf", _FpCodeSin);
}
 
double _sin_special(double x)
{
    return _sincos_special(x, "sin", _FpCodeSin);
}
 
float _cosf_special(float x)
{
    return _sincosf_special(x, "cosf", _FpCodeCos);
}
 
double _cos_special(double x)
{
    return _sincos_special(x, "cos", _FpCodeCos);
}
 
double _tan_special(double x)
{
        return  _sincos_special(x, "tan",_FpCodeTan);
}
 
float _tanf_special(float x)
{
        return  _sincosf_special(x, "tanf",_FpCodeTan);
}