Math.log to take optinal second argument

2026-06-08 16:11:16 +00:00 · 2012-06-14 00:41:33 +09:00
parent e2447d3530
commit 91a665905a
1 changed files with 6 additions and 3 deletions
@@ -411,11 +411,14 @@ math_exp(mrb_state *mrb, mrb_value obj)
 static mrb_value
 math_log(mrb_state *mrb, mrb_value obj)
 {
-  mrb_float x;
+  mrb_float x, base;
+  int argc;

-  mrb_get_args(mrb, "f", &x);
+  argc = mrb_get_args(mrb, "f|f", &x, &base);
  x = log(x);
-
+  if (argc == 2) {
+    d /= log(base);
+  }
  return mrb_float_value(x);
 }