1 files changed, 70 insertions, 0 deletions
diff --git a/test/det.c b/test/det.c
new file mode 100644
index 0000000..c3c7461
--- /dev/null
+++ b/test/det.c
@@ -0,0 +1,70 @@
+/*
+ * Copyright © 2009 Ian D. Romanick
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <glu3.h>
+#include <math.h>
+#include <assert.h>
+
+struct foo {
+	GLUmat4 matrix;
+	GLfloat det;
+};
+
+static const struct foo test_cases[] = {
+	{
+		{{
+			{{1.0, 0.0, 0.0, 0.0}},
+			{{0.0, 1.0, 0.0, 0.0}},
+			{{0.0, 0.0, 1.0, 0.0}},
+			{{0.0, 0.0, 0.0, 1.0}}
+		}},
+		1.0
+	},
+	{
+		{{
+			{{1.0, 0.0, 0.0, 0.0}},
+			{{0.0, 1.0, 0.0, 0.0}},
+			{{0.0, 0.0, 1.0, 0.0}},
+			{{0.0, 0.0, 0.0, 1.0}}
+		}},
+		1.0
+	},
+};
+
+#define ELEMENTS_OF(a)  (sizeof(a) / sizeof(a[0]))
+
+int main(int argc, char **argv)
+{
+	unsigned i;
+
+	(void)argc;
+	(void)argv;
+
+	for (i = 0; i < ELEMENTS_OF(test_cases); i++) {
+		const GLfloat det = gluDeterminant4_4m(& test_cases[i].matrix);
+
+		assert(fabs(det - test_cases[i].det) < 0.0000001);
+	}
+
+	return 0;
+}