make random more random

Links2004 · Links2004 · commit bf067f718a29 · 2016-01-29T13:17:10.000+01:00
diff --git a/cores/esp8266/WMath.cpp b/cores/esp8266/WMath.cpp
@@ -26,18 +26,19 @@
 extern "C" {
 #include <stdlib.h>
 }
+#include "esp8266_peri.h"
 
 void randomSeed(unsigned long seed) {
     if(seed != 0) {
-        srand(seed);
+        srand((seed ^ RANDOM_REG32));
     }
 }
 
 long random(long howbig) {
     if(howbig == 0) {
         return 0;
     }
-    return rand() % howbig;
+    return (rand() ^ RANDOM_REG32) % howbig;
 }
 
 long random(long howsmall, long howbig) {

Original file line number	Diff line number	Diff line change
`@@ -26,18 +26,19 @@`
`26`	`26`	`extern "C" {`
`27`	`27`	`#include <stdlib.h>`
`28`	`28`	`}`
	`29`	`+#include "esp8266_peri.h"`
`29`	`30`
`30`	`31`	`void randomSeed(unsigned long seed) {`
`31`	`32`	`if(seed != 0) {`
`32`		`- srand(seed);`
	`33`	`+ srand((seed ^ RANDOM_REG32));`
`33`	`34`	`}`
`34`	`35`	`}`
`35`	`36`
`36`	`37`	`long random(long howbig) {`
`37`	`38`	`if(howbig == 0) {`
`38`	`39`	`return 0;`
`39`	`40`	`}`
`40`		`- return rand() % howbig;`
	`41`	`+ return (rand() ^ RANDOM_REG32) % howbig;`
`41`	`42`	`}`
`42`	`43`
`43`	`44`	`long random(long howsmall, long howbig) {`