https://git.ruby-lang.org/ruby.git/commit/?id=1464f7a149

From 1464f7a149264b02637fdd444f8a431f1692981a Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Sun, 14 Jul 2019 18:01:24 +0900
Subject: Expand f_abs to use particular functions directly


diff --git a/complex.c b/complex.c
index 44fd657..c3e2fcc 100644
--- a/complex.c
+++ b/complex.c
@@ -152,7 +152,24 @@ f_sub(VALUE x, VALUE y) https://github.com/ruby/ruby/blob/trunk/complex.c#L152
     return rb_funcall(x, '-', 1, y);
 }
 
-fun1(abs)
+inline static VALUE
+f_abs(VALUE x)
+{
+    if (RB_INTEGER_TYPE_P(x)) {
+        return rb_int_abs(x);
+    }
+    else if (RB_FLOAT_TYPE_P(x)) {
+        return rb_float_abs(x);
+    }
+    else if (RB_TYPE_P(x, T_RATIONAL)) {
+        return rb_rational_abs(x);
+    }
+    else if (RB_TYPE_P(x, T_COMPLEX)) {
+        return rb_complex_abs(x);
+    }
+    return rb_funcall(x, id_abs, 0);
+}
+
 fun1(arg)
 fun1(denominator)
 
-- 
cgit v0.10.2


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