From d6284e5e6bba2e2f42ac5d1fc952c73a5c2f5f14 Mon Sep 17 00:00:00 2001
From: clifford <clifford@b57f626f-c46c-0410-a088-ec61d464b74c>
Date: Fri, 26 Feb 2010 11:53:32 +0000
Subject: Clifford Wolf: 	Added abs() function

git-svn-id: http://svn.clifford.at/openscad/trunk@454 b57f626f-c46c-0410-a088-ec61d464b74c

diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index 65f073d..e1c06b8 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -4,6 +4,7 @@ OpenSCAD 2010.03
 
  .. ADD STUFF HERE ..
  o Added functions and statements
+  - Added abs() function
   - Added exp(x), log(b, x), log(x) and ln(x) functions
   - Added minkowski() statement for 3d minkowski sums
  o Some bugs fixed, maybe some new bugs added
diff --git a/src/func.cc b/src/func.cc
index ca7a8d4..9f1b8e7 100644
--- a/src/func.cc
+++ b/src/func.cc
@@ -110,6 +110,13 @@ static double rad2deg(double x)
 	return x;
 }
 
+Value builtin_abs(const Context *, const QVector<QString>&, const QVector<Value> &args)
+{
+	if (args.size() == 1 && args[0].type == Value::NUMBER)
+		return Value(fabs(args[0].num));
+	return Value();
+}
+
 Value builtin_min(const Context *, const QVector<QString>&, const QVector<Value> &args)
 {
 	if (args.size() >= 1 && args[0].type == Value::NUMBER) {
@@ -284,6 +291,7 @@ Value builtin_lookup(const Context *, const QVector<QString>&, const QVector<Val
 
 void initialize_builtin_functions()
 {
+	builtin_functions["abs"] = new BuiltinFunction(&builtin_abs);
 	builtin_functions["min"] = new BuiltinFunction(&builtin_min);
 	builtin_functions["max"] = new BuiltinFunction(&builtin_max);
 	builtin_functions["sin"] = new BuiltinFunction(&builtin_sin);
-- 
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