get initial try.

but notice it is too skewed towards low numbers

probppl.go

@@ -1,16 +1,39 @@
 package main
 
 import "fmt"
+import rand "math/rand/v2"
 
 /*
 import "math"
 import "sync"
 import rand "math/rand/v2"
 
-type src = *rand.Rand
 */
 
+type src = *rand.Rand
+
+func generateRandomMapping(r src) map[int]float64 {
+	current_probability := 0.0
+	mapping := make(map[int]float64)
+	for i := 0; i <= 1000; i++ {
+		if current_probability < 1.0 {
+			num_possible_steps := int((1-current_probability)/0.001) + 1
+			fmt.Println("num possible steps: %d", num_possible_steps)
+			step := float64(r.IntN(num_possible_steps)) * 0.001
+			current_probability += step
+		}
+		mapping[i] = current_probability
+	}
+	return mapping
+}
+
 func main() {
 	fmt.Println("Hello world")
 
+	var r = rand.New(rand.NewPCG(uint64(1), uint64(2)))
+	randomMapping := generateRandomMapping(r)
+	for i := 0; i <= 1000; i++ {
+		fmt.Printf("%d: %.4f\n", i, randomMapping[i])
+	}
+
 }