1 files changed, 190 insertions, 0 deletions

diff --git a/dis/Transitive/DISstressmarkRNG.h b/dis/Transitive/DISstressmarkRNG.h
new file mode 100644
index 0000000..4aa2620
--- /dev/null
+++ b/dis/Transitive/DISstressmarkRNG.h
@@ -0,0 +1,190 @@
+#include <math.h>
+
+#define IA 16807
+#define IM 2147483647
+#define AM (1.0/IM)
+#define IQ 127773
+#define IR 2836
+#define NTAB 32
+#define NDIV (1+(IM-1)/NTAB)
+#define EPS 1.2e-7
+#define RNMX (1.0-EPS)
+
+static long iy=0;
+static long iv[NTAB];
+static long iseed;
+
+int ABS(int x){
+  if (x>= 0) return x;
+  else
+    return (-x);
+}
+
+int sign(int x){
+  if (x >= 0) return 1;
+  else
+    return (-1);
+}
+
+int MAX(int x, int y){
+  if (x>= y) return x;
+  else
+    return y;
+}
+
+int MIN(int x, int y){
+  if (x<= y) return x;
+  else
+    return y;
+}
+
+void randInit(long idum)
+{
+  long j;
+  long k;
+
+  assert (idum <= 0);
+  assert (iy == 0);
+
+  iseed = idum;
+  if (-(iseed)<1){
+    iseed = 1;
+  }
+  else {
+    iseed = -(iseed);
+  }
+  for (j=NTAB+7; j>=0; j--){
+    k = (iseed)/IQ;
+    iseed = IA*(iseed-k*IQ)-IR*k;
+    if (iseed < 0){
+      iseed += IM;
+    }
+    if (j < NTAB){
+      iv[j] = iseed;
+    }
+  }
+  iy = iv[0];
+}
+
+float randNum()
+{
+  long j;
+  long k;
+  float temp;
+
+  assert (iy != 0);
+  
+  k = (iseed)/IQ;
+  iseed = IA*(iseed-k*IQ)-IR*k;
+
+  if (iseed < 0){
+    iseed += IM;
+  }
+  j = iy/NDIV; 
+  iy = iv[j];
+  iv[j] = iseed;
+
+  temp = AM * iy;
+
+  if (temp > RNMX){
+    return RNMX;
+  }
+  else {
+    return temp;
+  }
+}
+
+
+float randomFloat(float lowest_float, float highest_float)
+{
+ float value;
+ float range;
+
+assert (lowest_float < highest_float);
+
+range = highest_float - lowest_float;
+value = randNum()*(highest_float - lowest_float) + lowest_float;
+assert(value >= lowest_float);
+assert(value <= highest_float);
+
+return value;
+
+}
+
+float randomNonZeroFloat(float lowest_float, float highest_float, float epsilon)
+{
+
+  double range;
+  float value;
+
+
+  assert (lowest_float < 0);
+  assert (highest_float > 0);
+  assert (epsilon > 0);
+  assert ((epsilon < -lowest_float) && (epsilon < highest_float));
+  
+  range = highest_float - lowest_float;
+  value = (randNum() * range)+lowest_float;
+  
+  if (ABS(value) < epsilon) 
+    {
+      if (value > 0) value = value + epsilon;
+      else if (value < 0) value = value - epsilon;
+      
+    }
+
+  assert (value >= lowest_float);
+  assert (value <= highest_float);
+
+  return value;
+}
+
+unsigned int randomUInt(int lowest_uint, int highest_uint)
+{
+  float range;
+  unsigned int value;
+  float temp;
+
+  range =(float)(highest_uint - lowest_uint + 1);
+  temp = randNum();
+  value =(unsigned int)( floor(temp * range) + lowest_uint); 
+
+  assert (value >= lowest_uint);
+  assert (value <= highest_uint);
+
+  return value;
+}
+
+unsigned int randomNonZeroUInt(int lowest_uint, int highest_uint)
+{
+  float range;
+  unsigned int value;
+  float temp;
+
+  range =(float)(highest_uint - lowest_uint + 1);
+  value = 0;
+  while(value == 0){
+  temp = randNum();
+
+  value =(unsigned int)( floor(temp * range) + lowest_uint); 
+  }
+  
+  assert (value >= lowest_uint);
+  assert (value <= highest_uint);
+
+  return value;
+}
+
+int randInt(int lowest_uint,  int highest_uint)
+{
+  float range;
+  int value;
+  
+  range = highest_uint - lowest_uint + 1;
+  value = (int)(floor(randNum() * range) + lowest_uint);
+  
+  assert (value >= lowest_uint);
+  assert (value <= highest_uint);
+
+  return value;
+}