rsys

commit 639e6c20097f82c766d8c0f94c609705ff59359e
parent b38dbe74d038c9fabec0827af23e562cc6558b28
Author: vaplv <vaplv@free.fr>
Date:   Fri, 11 Sep 2020 11:55:33 +0200

Test the endianness functions

Diffstat:
M
cmake/CMakeLists.txt
 | 
1
+
A
src/test_endianness.c
 | 
51
+++++++++++++++++++++++++++++++++++++++++++++++++++

2 files changed, 52 insertions(+), 0 deletions(-)
diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
@@ -210,6 +210,7 @@ if(NOT NO_TEST)
   new_test(test_double22)
   new_test(test_double33 ${MATH_LIB})
   new_test(test_double44)
+  new_test(test_endianness)
   new_test(test_dynamic_array rsys)
   new_test(test_float2 ${MATH_LIB})
   new_test(test_float3 ${MATH_LIB})
diff --git a/src/test_endianness.c b/src/test_endianness.c
@@ -0,0 +1,51 @@
+/* Copyright (C) 2013-2020 Vincent Forest (vaplv@free.fr)
+ *
+ * The RSys library is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * The RSys library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with the RSys library. If not, see <http://www.gnu.org/licenses/>. */
+
+#include "endianness.h"
+
+int
+main(int argc, char** argv)
+{
+  uint16_t ui16 = 0x0123;
+  uint32_t ui32 = 0x01234567;
+  uint64_t ui64 = 0x0123456789ABCDEF;
+  (void)argc, (void)argv;
+
+  CHK(byte_swap_16(ui16) == 0x2301);
+  CHK(byte_swap_32(ui32) == 0x67452301);
+  CHK(byte_swap_64(ui64) == 0xEFCDAB8967452301);
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+  CHK(little_endian_16(ui16) == ui16);
+  CHK(little_endian_32(ui32) == ui32);
+  CHK(little_endian_64(ui64) == ui64);
+  CHK(big_endian_16(ui16) == byte_swap_16(ui16));
+  CHK(big_endian_32(ui32) == byte_swap_32(ui32));
+  CHK(big_endian_64(ui64) == byte_swap_64(ui64));
+
+#elif BYTE_ORDER == BIG_ENDIAN
+  CHK(little_endian_16(ui16) == byte_swap_16(ui16));
+  CHK(little_endian_32(ui32) == byte_swap_32(ui32));
+  CHK(little_endian_64(ui64) == byte_swap_64(ui64));
+  CHK(big_endian_16(ui16) == ui16);
+  CHK(big_endian_32(ui32) == ui32);
+  CHK(big_endian_64(ui64) == ui64);
+
+#else
+  #error "Undefined endianness"
+#endif
+
+  return 0;
+}