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fixed: tricorn.c, inverted the signs that were wrong

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This commit is contained in:
Cem
2026-07-07 22:55:33 +02:00
parent 248daaf784
commit 915298f545
2 changed files with 6 additions and 8 deletions
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Implementierung/main.c
-2
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@@ -45,8 +45,6 @@ void benchmarking(size_t benchmarking_amount, int version_to_use, float complex
break; break;
case 4: // Uses highly optimized SIMD case 4: // Uses highly optimized SIMD
printf("Benchmarking V4 - optimized SIMD implementation\n"); printf("Benchmarking V4 - optimized SIMD implementation\n");
tricorn_implementation = tricorn_V3;
tricorn_implementation = tricorn_V4; tricorn_implementation = tricorn_V4;
break; break;
case 5: // Experimental cleanups and inlines / for testing case 5: // Experimental cleanups and inlines / for testing
Implementierung/tricorn.c
+6 -6
View File
@@ -41,13 +41,13 @@ void tricorn(float complex start, size_t width, ssize_t height, float res, unsig
// Calculating the threadcount so that it is limited to a reasonable distribution where thread starting doesnt outway calculation cost // Calculating the threadcount so that it is limited to a reasonable distribution where thread starting doesnt outway calculation cost
size_t thread_count = get_thread_count(); size_t thread_count = get_thread_count();
if(height >= min_rows_per_thread) if(abs_height >= min_rows_per_thread)
while((height/thread_count) < min_rows_per_thread) thread_count--; while((abs_height/thread_count) < min_rows_per_thread) thread_count--;
else thread_count = 1; else thread_count = 1;
const size_t y_step = (height+thread_count-1)/thread_count; const size_t y_step = (abs_height+thread_count-1)/thread_count;
const float start_r = crealf(start); const float start_r = crealf(start);
const float start_i = cimagf(start); const float start_i = cimagf(start);
const float directional_res = (flipped ? -1.0f: 1.0f)*res; const float directional_res = (flipped ? -1.0f: 1.0f)*res;
@@ -64,7 +64,7 @@ void tricorn(float complex start, size_t width, ssize_t height, float res, unsig
for(size_t i = 0; i < thread_count; i++){ for(size_t i = 0; i < thread_count; i++){
compute_args* args = malloc(sizeof(*args)); compute_args* args = malloc(sizeof(*args));
args->start_r =start_r; args->start_r =start_r;
args->start_i =start_i-i*directional_res*y_step; args->start_i =start_i+i*directional_res*y_step;
args->start_row = i*y_step; args->start_row = i*y_step;
args->stop_row = abs_height < (args->start_row+y_step) ? abs_height: (args->start_row+y_step); args->stop_row = abs_height < (args->start_row+y_step) ? abs_height: (args->start_row+y_step);
args->consts = consts; args->consts = consts;
@@ -176,8 +176,8 @@ static void* compute(void * vargs){
c->img[position + 2] = ((value*5) % 255); c->img[position + 2] = ((value*5) % 255);
} }
} }
c_imag -= vertical_step; c_imag += vertical_step;
c_imag_vector = _mm_sub_ps(c_imag_vector,vertical_step_vector); c_imag_vector = _mm_add_ps(c_imag_vector,vertical_step_vector);
} }
free(args); free(args);
args = NULL; args = NULL;