time-to-botec

commit c9f6e964ee449588d13bb7d08959da38766682ff
parent 934c84e195ea26f0cd14893c92acdb4e203a4b28
Author: NunoSempere <nuno.sempere@protonmail.com>
Date:   Fri, 16 Feb 2024 00:40:02 +0100

continue defining simple go API

Diffstat:
D
go/hello.go
 | 
7
-------
M
go/squiggle.go
 | 
27
++++++++++++++++++++++++++-

2 files changed, 26 insertions(+), 8 deletions(-)
diff --git a/go/hello.go b/go/hello.go
@@ -1,7 +0,0 @@
-package main
-
-import "fmt"
-
-func main() {
-	fmt.Println("Hello world!")
-}
diff --git a/go/squiggle.go b/go/squiggle.go
@@ -1,12 +1,37 @@
 package main
 
 import "fmt"
+import "math"
 import rand "math/rand/v2"
 
 var r = rand.New(rand.NewPCG(1, 2))
 
+func sample_unit_uniform() float64 {
+	return r.Float64()
+}
+
 func sample_unit_normal() float64 {
-	return 1.0
+	return r.NormFloat64()
+}
+
+func sample_uniform(start float64, end float64) float64 {
+	return sample_unit_uniform()*(end-start) + start
+}
+
+func sample_normal(mean float64, sigma float64) float64 {
+	return mean + sample_unit_normal()*sigma
+}
+
+func sample_lognormal(logmean float64, logstd float64) float64 {
+	return (math.Exp(sample_normal(logmean, logstd)))
+}
+
+func sample_normal_from_90_ci(low float64, high float64) float64 {
+	var normal90 float64 = 1.6448536269514727
+	var mean float64 = (high + low) / 2.0
+	var std float64 = (high - low) / (2.0 * normal90)
+	return sample_normal(mean, std)
+
 }
 
 func main() {