From 75098d06c2feffc48c624d19f4b24f3e718099f8 Mon Sep 17 00:00:00 2001
From: arghdos <arghdos@gmail.com>
Date: Fri, 18 Nov 2016 13:30:54 -0500
Subject: [PATCH] add docu snippet about function calls
---
doc/tutorial.rst | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/doc/tutorial.rst b/doc/tutorial.rst
index 7d544ec47..a97405f77 100644
--- a/doc/tutorial.rst
+++ b/doc/tutorial.rst
@@ -1064,6 +1064,27 @@ More complicated programs
SCOP
+External Functions
+~~~~~~~~~~~~~~~~~~
+
+Loopy currently supports calls to several commonly used mathematical functions,
+e.g. exp/log, min/max, sin/cos/tan, sinh/cosh, abs, etc. They may be used in
+a loopy kernel by simply calling them, e.g.::
+
+ knl = lp.make_kernel(
+ "{ [i]: 0<=i<n }",
+ """
+ for i
+ a[i] = sqrt(i)
+ end
+ """)
+
+Additionally, all functions of one variable are currently recognized during
+code-generation however additional implementation may be required for custom
+functions. The full lists of available functions may be found in a the
+:class:`TargetBase` implementation (e.g. :class:`CudaTarget`)
+
+
Data-dependent control flow
~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
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