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/*========================== begin_copyright_notice ============================
Copyright (C) 2020-2021 Intel Corporation
SPDX-License-Identifier: MIT
============================= end_copyright_notice ===========================*/
#include "../imf.h"
#pragma OPENCL FP_CONTRACT OFF
typedef struct
{
unsigned int sZERO;
unsigned int sONE;
unsigned int sTWO;
unsigned int sSIGN_MASK;
unsigned int sABS_MASK;
unsigned int sPIO2;
unsigned int sPI;
unsigned int sPC8;
unsigned int sPC7;
unsigned int sPC6;
unsigned int sPC5;
unsigned int sPC4;
unsigned int sPC3;
unsigned int sPC2;
unsigned int sPC1;
unsigned int sPC0;
unsigned int iCHK_WORK_SUB;
unsigned int iCHK_WORK_CMP;
} __internal_satan2_la_data_t;
static __constant __internal_satan2_la_data_t __internal_satan2_la_data = {
0x00000000u,
0x3f800000u,
0x40000000u,
0x80000000u,
0x7FFFFFFFu,
0x3FC90FDBu,
0x40490FDBu,
0x3B322CC0u,
0xBC7F2631u,
0x3D2BC384u,
0xBD987629u,
0x3DD96474u,
0xBE1161F8u,
0x3E4CB79Fu,
0xBEAAAA49u,
0x3F800000u,
0x81000000u,
0xFC000000u,
};
static __constant int_float __satan2_la_c9 = { 0x3c909a7bu };
static __constant int_float __satan2_la_c8 = { 0xbd093579u };
static __constant int_float __satan2_la_c7 = { 0xbbacabd2u };
static __constant int_float __satan2_la_c6 = { 0x3d8c9f7bu };
static __constant int_float __satan2_la_c5 = { 0xbd85ac4eu };
static __constant int_float __satan2_la_c4 = { 0xbd39a551u };
static __constant int_float __satan2_la_c3 = { 0x3e348efbu };
static __constant int_float __satan2_la_c2 = { 0xbe05f628u };
static __constant int_float __satan2_la_c1 = { 0xbe8259b8u };
static __constant int_float __satan2_la_c0 = { 0xbd94e63du };
static __constant int_float __satan2_la_two32 = { 0x4f800000u };
static __constant int_float __satan2_la_zero = { 0x00000000u };
__attribute__((always_inline))
inline int __internal_satan2_la_cout (float *pyin, float *pxin, float *pres)
{
int nRet = 0;
float xin = *pxin, yin = *pyin;
{
int_float y, x, ya, xa, hcorr, fx, fy, hcorr2, sres, Q00;
unsigned sgn_x, sgn_y, sgn_r, sgn_c;
int sgnx_mask, smask;
float frcp_x, R, poly;
y.f = yin;
x.f = xin;
xa.w = x.w & 0x7fffffff;
ya.w = y.w & 0x7fffffff;
sgn_x = x.w ^ xa.w;
sgn_y = y.w ^ ya.w;
sgnx_mask = ((int) sgn_x) >> 31;
hcorr.w = sgnx_mask & 0x40490FDB;
fy.w = (((xa.w) < (ya.w)) ? (xa.w) : (ya.w));
fx.w = (((xa.w) >= (ya.w)) ? (xa.w) : (ya.w));
smask = ((int) (xa.w - ya.w)) >> 31;
hcorr2.w = smask & 0x3fc90FDB;
hcorr.f = hcorr2.f - hcorr.f;
sgn_c = (smask & 0x80000000);
hcorr.w ^= sgn_c;
sgn_r = sgn_c ^ (sgn_x ^ sgn_y);
if (((unsigned) (fx.w - 0x00800000) > 0x7e000000) || (fy.f == __satan2_la_zero.f))
goto SPECIAL_ATAN2F;
ATAN2F_MAIN:
frcp_x = 1.0f / (fx.f);
Q00.f = (fy.f * frcp_x);
R = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (fy.f, frcp_x, -0.5f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (__satan2_la_c9.f, R, __satan2_la_c8.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c7.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c6.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c5.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c4.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c3.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c2.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c1.f);
poly = SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, R, __satan2_la_c0.f);
sres.f = (SPIRV_OCL_BUILTIN(fma, _f32_f32_f32, ) (poly, Q00.f, Q00.f));
sres.f += hcorr.f;
sres.w = sres.w ^ sgn_r;
*pres = sres.f;
return nRet;
SPECIAL_ATAN2F:
if (fx.w > 0x7f800000u)
{
if (xa.w > 0x7f800000u)
sres.w = x.w | 0x00400000u;
else
sres.w = y.w | 0x00400000u;
*pres = sres.f;
return nRet;
}
if (fy.f == __satan2_la_zero.f)
{
sres.w = sgn_y ^ (hcorr.w & 0x7fffffff);
*pres = sres.f;
return nRet;
}
if (fx.w == 0x7f800000)
{
if (fy.w < 0x7f800000u)
{
if (ya.w == 0x7f800000u)
sres.w = sgn_y ^ 0x3fc90FDB;
else
sres.w = sgn_r ^ sgn_c ^ hcorr.w;
*pres = sres.f;
return nRet;
}
if (x.w == 0xff800000u)
sres.w = 0x4016CBE4;
else
sres.w = 0x3f490FDB;
sres.w ^= sgn_y;
*pres = sres.f;
return nRet;
}
if (fx.w < 0x00800000u)
{
fx.f *= __satan2_la_two32.f;
fy.f *= __satan2_la_two32.f;
}
else if (fx.w > 0x7e800000u)
{
fx.f *= 0.25f;
fy.f *= 0.25f;
}
goto ATAN2F_MAIN;
}
return nRet;
}
float __ocl_svml_atan2f (float a, float b)
{
float va1;
float va2;
float vr1;
unsigned int vm;
float r;
va1 = a;
va2 = b;
__internal_satan2_la_cout (&va1, &va2, &vr1);
r = vr1;;
return r;
}
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