1 files changed, 55 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/builtins-7.c b/gcc/testsuite/gcc.dg/builtins-7.c
new file mode 100644
index 000000000..13e708e29
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtins-7.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 2003  Free Software Foundation.
+
+   Verify that built-in math function constant folding of constant
+   arguments is correctly performed by the by the compiler.
+
+   Written by Roger Sayle, 30th March 2003.  */
+
+/* { dg-do link } */
+/* { dg-options "-O2 -ffast-math" } */
+
+extern double pow (double, double);
+extern float powf (float, float);
+extern long double powl (long double, long double);
+extern double tan (double);
+extern float tanf (float);
+extern long double tanl (long double);
+extern double atan (double);
+extern float atanf (float);
+extern long double atanl (long double);
+
+extern void link_error(void);
+
+void test(double x)
+{
+  if (pow (x, 1.0) != x)
+    link_error ();
+  if (tan (atan (x)) != x)
+    link_error ();
+}
+
+void testf(float x)
+{
+  if (powf (x, 1.0f) != x)
+    link_error ();
+  if (tanf (atanf (x)) != x)
+    link_error ();
+}
+
+void testl(long double x)
+{
+  if (powl (x, 1.0l) != x)
+    link_error ();
+  if (tanl (atanl (x)) != x)
+    link_error ();
+}
+
+int main()
+{
+  test (2.0);
+  testf (2.0f);
+  testl (2.0l);
+
+  return 0;
+}
+