/*
Copyright (c) 2015-2016 Advanced Micro Devices, Inc. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANNTY OF ANY KIND, EXPRESS OR
IMPLIED, INNCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANNY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER INN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR INN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/


#ifndef HIPCOMPLEX_H
#define HIPCOMPLEX_H

typedef struct{
    float x;
    float y;
}hipFloatComplex;

__device__ inline float hipCrealf(hipFloatComplex z){
    return z.x;
}

__device__ inline float hipCimagf(hipFloatComplex z){
    return z.y;
}

__device__ inline hipFloatComplex make_hipFloatComplex(float a, float b){
    hipFloatComplex z;
    z.x = a;
    z.y = b;
    return z;
}

__device__ inline hipFloatComplex hipConjf(hipFloatComplex z){
    hipFloatComplex ret;
    ret.x = z.x;
    ret.y = z.y;
    return ret;
}

__device__ inline float hipCsqabsf(hipFloatComplex z){
    return z.x * z.x + z.y * z.y;
}

__device__ hipFloatComplex hipCaddf(hipFloatComplex p, hipFloatComplex q){
    return make_hipFloatComplex(p.x + q.x, p.y + q.y);
}

__device__ hipFloatComplex hipCsubf(hipFloatComplex p, hipFloatComplex q){
    return make_hipFloatComplex(p.x - q.x, p.y - q.y);
}

__device__ hipFloatComplex hipCmulf(hipFloatComplex p, hipFloatComplex q){
    return make_hipFloatComplex(p.x * q.x - p.y * q.y, p.y * q.x + p.x * q.y);
}

__device__ hipFloatComplex hipCdivf(hipFloatComplex p, hipFloatComplex q){
    float sqabs = hipCsqabsf(q);
    hipFloatComplex ret;
    ret.x = (p.x * q.x + p.y * q.y)/sqabs;
    ret.y = (p.y * q.x - p.x * q.y)/sqabs;
    return ret;
}

__device__ float hipCabsf(hipFloatComplex z){
    return sqrtf(hipCsqabsf(z));
}


typedef struct{
    double x;
    double y;
}hipDoubleComplex;

__device__ inline double hipCreal(hipDoubleComplex z){
    return z.x;
}

__device__ inline double hipCimag(hipDoubleComplex z){
    return z.y;
}

__device__ inline hipDoubleComplex make_hipDoubleComplex(double a, double b){
    hipDoubleComplex z;
    z.x = a;
    z.y = b;
    return z;
}

__device__ inline hipDoubleComplex hipConj(hipDoubleComplex z){
    hipDoubleComplex ret;
    ret.x = z.x;
    ret.y = z.y;
    return ret;
}

__device__ inline double hipCsqabs(hipDoubleComplex z){
    return z.x * z.x + z.y * z.y;
}

__device__ hipDoubleComplex hipCadd(hipDoubleComplex p, hipDoubleComplex q){
    return make_hipDoubleComplex(p.x + q.x, p.y + q.y);
}

__device__ hipDoubleComplex hipCsub(hipDoubleComplex p, hipDoubleComplex q){
    return make_hipDoubleComplex(p.x - q.x, p.y - q.y);
}

__device__ hipDoubleComplex hipCmul(hipDoubleComplex p, hipDoubleComplex q){
    return make_hipDoubleComplex(p.x * q.x - p.y * q.y, p.y * q.x + p.x * q.y);
}

__device__ hipDoubleComplex hipCdiv(hipDoubleComplex p, hipDoubleComplex q){
    double sqabs = hipCsqabs(q);
    hipDoubleComplex ret;
    ret.x = (p.x * q.x + p.y * q.y)/sqabs;
    ret.y = (p.y * q.x - p.x * q.y)/sqabs;
    return ret;
}

__device__ inline double hipCabs(hipDoubleComplex z){
    return sqrtf(hipCsqabs(z));
}

typedef hipFloatComplex hipComplex;

__device__ inline hipComplex make_hipComplex(float x,
                                            float y){
    return make_hipFloatComplex(x, y);
}

__device__ inline hipFloatComplex hipComplexDoubleToFloat
(hipDoubleComplex z){
    return make_hipFloatComplex((float)z.x, (float)z.y);
}

__device__ inline hipDoubleComplex hipComplexFloatToDouble
(hipFloatComplex z){
    return make_hipDoubleComplex((double)z.x, (double)z.y);
}

__device__ inline hipComplex hipCfmaf(hipComplex p, hipComplex q, hipComplex r){
    float real = (p.x * q.x) + r.x;
    float imag = (q.x * p.y) + r.y;

    real = -(p.y * q.y) + real;
    imag = (p.x * q.y) + imag;

    return make_hipComplex(real, imag);
}

__device__ inline hipDoubleComplex hipCfma(hipDoubleComplex p, hipDoubleComplex q, hipDoubleComplex r){
    float real = (p.x * q.x) + r.x;
    float imag = (q.x * p.y) + r.y;

    real = -(p.y * q.y) + real;
    imag = (p.x * q.y) + imag;

    return make_hipDoubleComplex(real, imag);
}



#endif