rocm-systems/include/hcc_detail/hipComplex.h

/*
Copyright (c) 2015-2016 Advanced Micro Devices, Inc. All rights reserved.
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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
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THE SOFTWARE.
*/


#ifndef HIPCOMPLEX_H
#define HIPCOMPLEX_H

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

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

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

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

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

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

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

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

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


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

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

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

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

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

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

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

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

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

typedef hipFloatComplex hipComplex;

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

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

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

__device__ static 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__ static 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