Changed function and file naming to comply with assignment
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@@ -6,7 +6,7 @@
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#include <getopt.h> // for getopt_long
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#include <string.h> // for strcpy
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#include "tricorn.h"
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#include "tricorn_simd.h"
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#include "tricorn_V0.h"
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void save_bmp(const char *filename, unsigned char *img, size_t width, ssize_t height,_Bool color);
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@@ -201,7 +201,7 @@ int main(int argc, char** argv)
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printf("yashar\n");
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if(version_to_use == 0) { // -V0 uses optimized SIMD-Version
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tricorn_simd(complexA,width,height,resolution,n,colored,tempArr);
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tricorn_V0(complexA,width,height,resolution,n,colored,tempArr);
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}
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else if (version_to_use == 1){ // -V1 uses unoptimized version
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tricorn(complexA,width,height,resolution,n,colored,tempArr);
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@@ -1,9 +1,12 @@
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#include "tricorn_simd.h"
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#include "tricorn_V0.h"
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#include <immintrin.h>
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static unsigned converge(float c_rea, float c_imag, unsigned n);
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void tricorn_simd(float complex start, size_t width, ssize_t height, float res, unsigned n, _Bool color, unsigned char* img){
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// HIGHLY OPTIMIZED SIMD VERSION
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void tricorn_V0(float complex start, size_t width, ssize_t height, float res, unsigned n, _Bool color, unsigned char* img){
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int bytesPerColor = color ? 3 : 1;
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// Absolute height for iteration purposes
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@@ -0,0 +1,6 @@
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#include <complex.h>
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#include <stddef.h>
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#include <math.h>
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#include <sys/types.h>
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#include<stdbool.h>
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void tricorn_V0(float complex start, size_t width, ssize_t height, float res, unsigned n, bool color, unsigned char* img);
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@@ -0,0 +1,54 @@
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#include "tricorn_V1.h"
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static const float convergenceLimit = 2.0f; // Mandelbrot set limit
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static unsigned converge(float complex position,unsigned n);
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// OPTIMIZED SISD VERSION
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void tricorn_V1(float complex start, size_t width, ssize_t height, float res, unsigned n, _Bool color, unsigned char* img){
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// Absolute height for iteration purposes
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height = height < 0 ? height*-1 : height;
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unsigned bytesPerColor = color ? 3 : 1;
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// Simple iteration over every pixel in the picture
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for(size_t i = 0; i < width; i++){
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for(ssize_t j = 0; j < height; j++){
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unsigned value = converge(start + (i*res - I*j*res),n+1);
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// Pixel value position in the output array
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size_t position = (j*width +i) * bytesPerColor;
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if(!color){ // Grayscale colors as specified by the assignment r = g = b
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img[position] = value;
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}
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else{ // Temporary colors with random multipliers
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img[position] = ((value*3) % 255);
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img[position + 1] = ((value*2) % 255) ;
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img[position + 2] = ((value*5) % 255);
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}
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}
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}
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}
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// Iterative application of the equation given by the assignment
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static unsigned converge(float complex position,unsigned n){
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complex float result = 0;
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for(unsigned i = 0; i < n; i++){
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// Detection of unbounded behaviour
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// If the magnitude of the result vector is greater than the convergence limit, we know that the function will grow unbounded
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// Current convergence limit taken from mandelbrot set
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if(sqrtf(powf (crealf(result),2)+powf(cimagf(result),2)) > convergenceLimit)
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return 255-4*(i % 64);
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// Application of the given complex equation with m = 2
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result = cpowf(conjf(result),2) + position;
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}
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return 0;
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}
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@@ -0,0 +1,5 @@
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#include <complex.h>
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#include <stddef.h>
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#include <math.h>
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#include <sys/types.h>
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void tricorn_V1(float complex start, size_t width, ssize_t height, float res, unsigned n, _Bool color, unsigned char* img);
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@@ -1,5 +0,0 @@
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#include <complex.h>
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#include <stddef.h>
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#include <math.h>
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#include <sys/types.h>
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void tricorn_simd(float complex start, size_t width, ssize_t height, float res, unsigned n, _Bool color, unsigned char* img);
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