1 files changed, 149 insertions, 0 deletions
diff --git a/src/systemcmds/tests/test_int.c b/src/systemcmds/tests/test_int.c
new file mode 100644
index 000000000..c59cee7b7
--- /dev/null
+++ b/src/systemcmds/tests/test_int.c
@@ -0,0 +1,149 @@
+/****************************************************************************
+ * px4/sensors/test_gpio.c
+ *
+ *  Copyright (C) 2012 PX4 Development Team. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <debug.h>
+
+#include <arch/board/board.h>
+
+#include "tests.h"
+
+#include <math.h>
+#include <float.h>
+
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: test_led
+ ****************************************************************************/
+
+typedef union {
+	int32_t i;
+	int64_t l;
+	uint8_t b[8];
+} test_32_64_t;
+
+int test_int(int argc, char *argv[])
+{
+	int ret = 0;
+
+	printf("\n--- 64 BIT MATH TESTS ---\n");
+
+	int64_t large = 354156329598;
+
+	int64_t calc = large * 5;
+
+	if (calc == 1770781647990) {
+		printf("\t success: 354156329598 * 5 == %lld\n", calc);
+
+	} else {
+		printf("\t FAIL: 354156329598 * 5 != %lld\n", calc);
+		ret = -1;
+	}
+
+	fflush(stdout);
+
+
+
+
+
+	printf("\n--- 32 BIT / 64 BIT MIXED MATH TESTS ---\n");
+
+
+	int32_t small = 50;
+	int32_t large_int = 2147483647; // MAX INT value
+
+	uint64_t small_times_large = large_int * (uint64_t)small;
+
+	if (small_times_large == 107374182350) {
+		printf("\t success: 64bit calculation: 50 * 2147483647 (max int val) == %lld\n", small_times_large);
+
+	} else {
+		printf("\t FAIL: 50 * 2147483647 != %lld, 64bit cast might fail\n", small_times_large);
+		ret = -1;
+	}
+
+	fflush(stdout);
+
+	if (ret == 0) {
+		printf("\n SUCCESS: All float and double tests passed.\n");
+
+	} else {
+		printf("\n FAIL: One or more tests failed.\n");
+	}
+
+	printf("\n");
+
+	return ret;
+}