From 57e7da173e8d38bf0c95ded535cdf1b12a00a1a2 Mon Sep 17 00:00:00 2001
From: Kenneth Graunke <kenneth@whitecape.org>
Date: Mon, 3 May 2010 22:11:17 -0700
Subject: [PATCH] Implement "sin" and "cos" builtins via new expression
 operators.

---
 builtins/110/cos | 21 +++++++++++++++++++++
 builtins/110/sin | 21 +++++++++++++++++++++
 ir.cpp           |  5 +++++
 ir.h             |  8 ++++++++
 4 files changed, 55 insertions(+)
 create mode 100644 builtins/110/cos
 create mode 100644 builtins/110/sin

diff --git a/builtins/110/cos b/builtins/110/cos
new file mode 100644
index 00000000000..88f266eccbe
--- /dev/null
+++ b/builtins/110/cos
@@ -0,0 +1,21 @@
+((function cos
+   (signature float
+     (parameters
+       (declare (in) float angle))
+     ((return (expression float cos (var_ref angle)))))
+
+   (signature vec2
+     (parameters
+       (declare (in) vec2 angle))
+     ((return (expression vec2 cos (var_ref angle)))))
+
+   (signature vec3
+     (parameters
+       (declare (in) vec3 angle))
+     ((return (expression vec3 cos (var_ref angle)))))
+
+   (signature vec4
+     (parameters
+       (declare (in) vec4 angle))
+     ((return (expression vec4 cos (var_ref angle)))))
+))
diff --git a/builtins/110/sin b/builtins/110/sin
new file mode 100644
index 00000000000..e6009d8ef12
--- /dev/null
+++ b/builtins/110/sin
@@ -0,0 +1,21 @@
+((function sin
+   (signature float
+     (parameters
+       (declare (in) float angle))
+     ((return (expression float sin (var_ref angle)))))
+
+   (signature vec2
+     (parameters
+       (declare (in) vec2 angle))
+     ((return (expression vec2 sin (var_ref angle)))))
+
+   (signature vec3
+     (parameters
+       (declare (in) vec3 angle))
+     ((return (expression vec3 sin (var_ref angle)))))
+
+   (signature vec4
+     (parameters
+       (declare (in) vec4 angle))
+     ((return (expression vec4 sin (var_ref angle)))))
+))
diff --git a/ir.cpp b/ir.cpp
index b927c73ccb6..eb12b5fe77f 100644
--- a/ir.cpp
+++ b/ir.cpp
@@ -73,6 +73,9 @@ ir_expression::get_num_operands(ir_expression_operation op)
       1, /* ir_unop_ceil */
       1, /* ir_unop_floor */
 
+      1, /* ir_unop_sin */
+      1, /* ir_unop_cos */
+
       2, /* ir_binop_add */
       2, /* ir_binop_sub */
       2, /* ir_binop_mul */
@@ -131,6 +134,8 @@ static const char *const operator_strs[] = {
    "trunc",
    "ceil",
    "floor",
+   "sin",
+   "cos",
    "+",
    "-",
    "*",
diff --git a/ir.h b/ir.h
index 55a67733fe7..df9a8c4174d 100644
--- a/ir.h
+++ b/ir.h
@@ -449,6 +449,14 @@ enum ir_expression_operation {
    ir_unop_floor,
    /*@}*/
 
+   /**
+    * \name Trigonometric operations.
+    */
+   /*@{*/
+   ir_unop_sin,
+   ir_unop_cos,
+   /*@}*/
+
    ir_binop_add,
    ir_binop_sub,
    ir_binop_mul,
-- 
2.30.2