time-to-botec

commit 88c079235e3b2d95963bb6f7a48296bf43f1b431
parent f0493f695552b3b76c34d5e18f2f3f14ac8e4bd9
Author: NunoSempere <nuno.sempere@protonmail.com>
Date:   Sat, 20 May 2023 21:13:51 -0400

add starting version for nim

Diffstat:
A
wip/nim/hello_world/hello_world
 | 
0

A
wip/nim/hello_world/hello_world.nim
 | 
1
+
A
wip/nim/hello_world/makefile
 | 
2
++
A
wip/nim/samples
 | 
0

A
wip/nim/samples.nim
 | 
34
++++++++++++++++++++++++++++++++++

5 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/wip/nim/hello_world/hello_world b/wip/nim/hello_world/hello_world
Binary files differ.
diff --git a/wip/nim/hello_world/hello_world.nim b/wip/nim/hello_world/hello_world.nim
@@ -0,0 +1 @@
+echo "Hello world"
diff --git a/wip/nim/hello_world/makefile b/wip/nim/hello_world/makefile
@@ -0,0 +1,2 @@
+build: hello_world.nim
+	nim c hello_world.nim
diff --git a/wip/nim/samples b/wip/nim/samples
Binary files differ.
diff --git a/wip/nim/samples.nim b/wip/nim/samples.nim
@@ -0,0 +1,34 @@
+import std/random
+import std/math
+# randomize()
+
+proc pow2(x:float, y:int): float = 
+  return pow(x, float(y))
+
+proc sine(x: float): float = 
+  let n = 100
+  var result = 0.0
+  for i in 0..n:
+    let k = 2*n + 1
+    let taylor = pow2(x, k)/ float(k)
+    result = result + taylor
+  return result
+
+proc log(x: float): float = 
+  var y = x - 1 
+  var result = 0.0
+  let n = 1000
+  for i in 1..n:
+    let taylor = pow2(-1, n+1) * pow2(y, n) / float(n)
+    let n = 1000
+    result = result + taylor
+  return result
+
+proc normal(): float = 
+  let u1 = rand(1.0)
+  let u2 = rand(1.0)
+  let z = 1
+  # see https://en.wikipedia.org/wiki/Box%E2%80%93Muller_transform#Basic_form
+
+
+echo log(1.0)