Add `sample` function to List module, add `log` and `exp` functions to Float module (#772)

1 files changed, 13 insertions, 0 deletions

diff --git a/src/gleam_stdlib.mjs b/src/gleam_stdlib.mjs
index 4f804f7..339963b 100644
--- a/src/gleam_stdlib.mjs
+++ b/src/gleam_stdlib.mjs
@@ -1010,3 +1010,16 @@ export function bit_array_starts_with(bits, prefix) {
 
   return true;
 }
+
+export function log(x) {
+  // It is checked in Gleam that:
+  // - The input is strictly positive (x > 0)
+  // - This ensures that Math.log will never return NaN or -Infinity
+  // The function can thus safely pass the input to Math.log
+  // and a valid finite float will always be produced.
+  return Math.log(x);
+}
+
+export function exp(x) {
+  return Math.exp(x);
+}