format number properly

lib.typ

@@ -0,0 +1,36 @@
+#import "@local/template-thesis-matisse:0.0.1": *
+
+// Format number.
+// Following https://www.mit.edu/course/21/21.guide/numbers.htm
+#let num(n, decimal: ".", thousands: " ") = {
+  let n = if type(n) == str {
+    float(n)
+  } else {
+    n
+  }
+  assert(type(n) == int or type(n) == float, message: "must be a number")
+
+  let parts = str(n).split(".")
+  let decimal_p = if parts.len() == 2 { parts.at(1) }
+  let integer_p = parts.at(0)
+  let integer_p = if integer_p.len() <= 4 {
+    integer_p
+  } else {
+    let nb_cluster = calc.div-euclid(integer_p.len(), 3)
+    let first_cluster_size = calc.rem-euclid(integer_p.len(), 3)
+    let clusters = ()
+    if first_cluster_size != 0 {
+      clusters.push(integer_p.slice(0, count: first_cluster_size))
+    }
+    for i in range(0, nb_cluster) {
+      clusters.push(integer_p.slice(first_cluster_size + i*3, count: 3))
+    }
+    clusters.join(thousands)
+  }
+  let formated = integer_p + if decimal_p != none { decimal + decimal_p }
+  [#formated]
+}
+
+
+#let mypercent(numerator, denominator, digits: 2) = [#num(calc.round((100 * numerator) / denominator, digits: digits))%]
+