compile

@@ -6,12 +6,4 @@ CFLAGS="-g -Wall -Werror "
 XORSHIFT_SRC="xorshift.c ppm.c"
 XORSHIFT_OUT=xorshift
 
-echo "Clean outputs dir..."
-rm -rf "./outputs/*"
-
-echo -e "\nBuild xorshift generators..."
 (set -x ; $CC $CFLAGS $XORSHIFT_SRC -o $XORSHIFT_OUT)
-
-echo -e "\nTest xorshift generators..."
-./xorshift
-echo "Generated"

xorshift.c

@@ -9,7 +9,14 @@ typedef struct {
   u64 y;
   u64 z;
   u64 w;
-} XOR256State;
+} XORShift256;
+
+typedef struct {
+  u64 x;
+  u64 y;
+  u64 z;
+  u64 w;
+} XOShiRo256SS;
 
 typedef u64(RandGenFunc)(void *s);
 
@@ -18,7 +25,6 @@ u64 xorshift_256_generate(void *s);
 void test_xoshiro_256ss(Image *img);
 u64 xoshiro_256ss_generate(void *s);
 u64 rol64(u64 x, u64 bits);
-XOR256State init_xor_256_state();
 void write_image_data(Image *img, RandGenFunc *gen_rand, void *s);
 
 int main(int argc, char *argv[]) {
@@ -48,12 +54,18 @@ int main(int argc, char *argv[]) {
 }
 
 void test_xorshift_256(Image *img) {
-  XOR256State state = init_xor_256_state();
+  XORShift256 state = {
+      .x = lrand48(),
+      .y = lrand48(),
+      .z = lrand48(),
+      .w = lrand48(),
+  };
+
   write_image_data(img, xorshift_256_generate, (void *)&state);
 }
 
 u64 xorshift_256_generate(void *s) {
-  XOR256State *state = (XOR256State *)s;
+  XORShift256 *state = (XORShift256 *)s;
 
   u64 t = state->x ^ (state->x << 11);
 
@@ -66,12 +78,18 @@ u64 xorshift_256_generate(void *s) {
 }
 
 void test_xoshiro_256ss(Image *img) {
-  XOR256State state = init_xor_256_state();
+  XOShiRo256SS state = {
+      .x = lrand48(),
+      .y = lrand48(),
+      .z = lrand48(),
+      .w = lrand48(),
+  };
+
   write_image_data(img, xoshiro_256ss_generate, (void *)&state);
 }
 
 u64 xoshiro_256ss_generate(void *s) {
-  XOR256State *state = (XOR256State *)s;
+  XOShiRo256SS *state = (XOShiRo256SS *)s;
 
   const u64 result = rol64(state->z * 5, 7) * 9;
   const u64 t = state->z << 17;
@@ -89,15 +107,6 @@ u64 xoshiro_256ss_generate(void *s) {
 
 u64 rol64(u64 x, u64 bits) { return (x << bits) | (x >> (64 - bits)); }
 
-XOR256State init_xor_256_state() {
-	return (XOR256State){
-      .x = lrand48(),
-      .y = lrand48(),
-      .z = lrand48(),
-      .w = lrand48(),
-	};
-}
-
 void write_image_data(Image *img, RandGenFunc *gen_rand, void *s) {
   for (u64 y = 0; y < img->height; ++y) {
     for (u64 x = 0; x < img->width; ++x) {