Implement crandk() and frandk() and remove old functions

src/common/header/common.h

@@ -699,9 +699,6 @@ void		Com_SetServerState (int state);
 unsigned	Com_BlockChecksum (void *buffer, int length);
 byte		COM_BlockSequenceCRCByte (byte *base, int length, int sequence);
 
-float	frand(void);	/* 0 ti 1 */
-float	crand(void);	/* -1 to 1 */
-
 extern	cvar_t	*developer;
 extern	cvar_t	*modder;
 extern	cvar_t	*dedicated;
@@ -759,6 +756,8 @@ void SV_Frame (int msec);
 
 /* Random number generator */
 int  randk(void);
+float frandk(void);
+float crandk(void);
 void randk_seed(void);
 
 #endif

src/common/misc.c

@@ -157,16 +157,6 @@ byte	COM_BlockSequenceCRCByte (byte *base, int length, int sequence)
 	return r;
 }
 
-float frand(void)
-{
-	return (rand()&32767)* (1.0/32767);
-}
-
-float crand(void)
-{
-	return (rand()&32767)* (2.0/32767) - 1;
-}
-
 #ifndef DEDICATED_ONLY
 void Key_Init (void);
 void SCR_EndLoadingPlaque (void);

src/common/rand.c

@@ -25,7 +25,7 @@ static int j;
 static uint64_t carry;
 static uint64_t xs;
 static uint64_t cng;
-
+  
 uint64_t
 B64MWC(void)
 {
@@ -36,7 +36,7 @@ B64MWC(void)
 	t = (x << 28) + carry;
 	carry = (x >> 36) - (t < x);
 	return QARY[j] = t - x;
-}
+} 
 
 /* 
  * Generate a pseudorandom 
@@ -47,7 +47,30 @@ randk(void)
 {
 	return (int)KISS;
 }
- 
+
+/*
+ * Generate a pseudorandom
+ * signed float between 
+ * 0 and 1.
+ */
+float
+frandk(void)
+{
+	return (randk()&32767)* (1.0/32767);
+}
+
+/* Generate a pseudorandom
+ * float between -1 and 1.
+ */
+float
+crandk(void)
+{
+	return (randk()&32767)* (2.0/32767) - 1;
+}
+
+/*
+ * Seeds the PRNG
+ */
 void
 randk_seed(void)
 {