Slight optimisation.

1 files changed, 6 insertions, 4 deletions

diff --git a/tools/clkcalc.c b/tools/clkcalc.c
index 2829ca9..cc5b932 100644
--- a/tools/clkcalc.c
+++ b/tools/clkcalc.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdint.h>
 
 double _fabs(double a)
 {
@@ -31,19 +32,19 @@ int main(int argc, char *argv[])
 	int fs = atoi(argv[1]);
 	int bw = atoi(argv[2]);
 	int ch = atoi(argv[3]);
-	
+
 	int target = fs * bw * ch;
 
 	int cclk = 100000000;
 
 	result_t res;
-	res.pclkdiv_idx = 0;
+	res.pclkdiv_idx = 3;
 
 	res.bitrate = 0;
 	res.x = 1;
 	res.y = 1;
 
-	for(;res.pclkdiv_idx < 4; res.pclkdiv_idx++) {
+	for(;res.pclkdiv_idx >= 0; res.pclkdiv_idx--) {
 
 		double clk = (cclk / pclkdiv[res.pclkdiv_idx]);
 
@@ -51,7 +52,8 @@ int main(int argc, char *argv[])
 
 			double clk_y = clk / (double)res.y;
 
-			for(res.x = 1; res.x < 256; res.x++) {
+			// Note y must be greater than or equal to x.
+			for(res.x = 1; res.x <= res.y; res.x++) {
 			
 				double clk_y_x_2 = (clk_y * (double)res.x) / 2.0;