diff -r e8afb1bf2779 -r 692903667ece project_files/hwc/rtl/system.c
--- a/project_files/hwc/rtl/system.c	Tue May 21 14:38:30 2024 +0200
+++ b/project_files/hwc/rtl/system.c	Tue Aug 27 17:01:13 2024 +0200
@@ -215,8 +215,8 @@
 
 string255 fpcrtl_floatToStr(double n) {
     string255 t;
-    sprintf(t.str, "%f", n);
-    t.len = strlen(t.str);
+    
+    t.len = sprintf(t.str, "%f", n);
 
     return t;
 }
@@ -352,9 +352,8 @@
 LongInt str_to_int(char *src)
 {
     int i;
-    int len = strlen(src);
     char *end;
-    for(i = 0; i < len; i++)
+    for(i = 0; src[i]; i++)
     {
         if(src[i] == '$'){
             // hex
@@ -387,51 +386,41 @@
 LongInt fpcrtl_random(LongInt l) {
     // random(0) is undefined in docs but effectively returns 0 in free pascal
     if (l == 0) {
-        printf("WARNING: random(0) called!\n");
+        //printf("WARNING: random(0) called!\n");
         return 0;
     }
     return (LongInt) (rand() / (double) RAND_MAX * l);
 }
 
 void __attribute__((overloadable)) fpcrtl_str__vars(float x, string255 *s) {
-    sprintf(s->str, "%f", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%f", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(double x, string255 *s) {
-    sprintf(s->str, "%f", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%f", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(uint8_t x, string255 *s) {
-    sprintf(s->str, "%u", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%u", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(int8_t x, string255 *s) {
-    sprintf(s->str, "%d", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%d", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(uint16_t x, string255 *s) {
-    sprintf(s->str, "%u", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%u", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(int16_t x, string255 *s) {
-    sprintf(s->str, "%d", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%d", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(uint32_t x, string255 *s) {
-    sprintf(s->str, "%u", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%u", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(int32_t x, string255 *s) {
-    sprintf(s->str, "%d", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%d", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(uint64_t x, string255 *s) {
-    sprintf(s->str, "%llu", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%llu", x);
 }
 void __attribute__((overloadable)) fpcrtl_str__vars(int64_t x, string255 *s) {
-    sprintf(s->str, "%lld", x);
-    s->len = strlen(s->str);
+    s->len = sprintf(s->str, "%lld", x);
 }
 
 /*