Painter: Re-enable diagonal draw_line().

This code still needs clipping, but the basic concept works. It was disabled
since before the kernel had floating point support.

1 files changed, 5 insertions, 0 deletions

diff --git a/LibM/math.cpp b/LibM/math.cpp
index d707c51c86..3637da62ab 100644
--- a/LibM/math.cpp
+++ b/LibM/math.cpp
@@ -91,4 +91,9 @@ double acos(double)
     ASSERT_NOT_REACHED();
 }
 
+double fabs(double value)
+{
+    return value < 0 ? -value : value;
+}
+
 }