From 598ab525da3df3fef2033c159c570688c7282a8f Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Fri, 6 Mar 2020 17:18:10 +0100
Subject: Cleanup: Replace ABS/SQUARE/CUBE with function calls

While it might be handy to have type-less functionality which is
similar to how C++ math is implemented it can not be easily achieved
with just preprocessor in a way which does not have side-effects on
wrong usage.

There macros where often used on a non-trivial expression, and there
was at least one usage where it was causing an actual side effect/bug
on Windows (see change around square_f(sh[index++]) in studiolight.c).

For such cases it is handy to have a function which is guaranteed to
have zero side-effects. The motivation behind actually removing the
macros is that there is already a way to do similar calculation. Also,
not having such macros is a way to guarantee that its usage is not
changed in a way which have side-effects and that it's not used as an
inspiration for cases where it should not be used.

Differential Revision: https://developer.blender.org/D7051
---
 source/blender/blenlib/intern/math_base_inline.c | 66 ++++++++++++++++++++++++
 1 file changed, 66 insertions(+)

(limited to 'source/blender/blenlib/intern/math_base_inline.c')

diff --git a/source/blender/blenlib/intern/math_base_inline.c b/source/blender/blenlib/intern/math_base_inline.c
index c0ee658d434..a293695154a 100644
--- a/source/blender/blenlib/intern/math_base_inline.c
+++ b/source/blender/blenlib/intern/math_base_inline.c
@@ -375,6 +375,72 @@ MINLINE float wrapf(float value, float max, float min)
   return (range != 0.0f) ? value - (range * floorf((value - min) / range)) : min;
 }
 
+// Square.
+
+MINLINE int square_s(short a)
+{
+  return a * a;
+}
+
+MINLINE int square_i(int a)
+{
+  return a * a;
+}
+
+MINLINE unsigned int square_uint(unsigned int a)
+{
+  return a * a;
+}
+
+MINLINE int square_uchar(unsigned char a)
+{
+  return a * a;
+}
+
+MINLINE float square_f(float a)
+{
+  return a * a;
+}
+
+MINLINE double square_d(double a)
+{
+  return a * a;
+}
+
+// Cube.
+
+MINLINE int cube_s(short a)
+{
+  return a * a * a;
+}
+
+MINLINE int cube_i(int a)
+{
+  return a * a * a;
+}
+
+MINLINE unsigned int cube_uint(unsigned int a)
+{
+  return a * a * a;
+}
+
+MINLINE int cube_uchar(unsigned char a)
+{
+  return a * a * a;
+}
+
+MINLINE float cube_f(float a)
+{
+  return a * a * a;
+}
+
+MINLINE double cube_d(double a)
+{
+  return a * a * a;
+}
+
+// Min/max
+
 MINLINE float min_ff(float a, float b)
 {
   return (a < b) ? a : b;
-- 
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