Add convenience load functions

test/load_convenience_test.cpp

@@ -0,0 +1,75 @@
+// Copyright 2019 Peter Dimov
+//
+// Distributed under the Boost Software License, Version 1.0.
+// http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/endian/conversion.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <boost/config.hpp>
+#include <boost/cstdint.hpp>
+#include <cstddef>
+
+int main()
+{
+    using namespace boost::endian;
+
+    unsigned char v[] = { 0xF1, 0xF2, 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8 };
+
+    // 16
+
+    BOOST_TEST_EQ( load_little_s16( v ), -3343 );
+    BOOST_TEST_EQ( load_little_u16( v ), 0xF2F1 );
+
+    BOOST_TEST_EQ( load_big_s16( v ), -3598 );
+    BOOST_TEST_EQ( load_big_u16( v ), 0xF1F2 );
+
+    // 24
+
+    BOOST_TEST_EQ( load_little_s24( v ), -789775 );
+    BOOST_TEST_EQ( load_little_u24( v ), 0xF3F2F1 );
+
+    BOOST_TEST_EQ( load_big_s24( v ), -920845 );
+    BOOST_TEST_EQ( load_big_u24( v ), 0xF1F2F3 );
+
+    // 32
+
+    BOOST_TEST_EQ( load_little_s32( v ), 0xF4F3F2F1 );
+    BOOST_TEST_EQ( load_little_u32( v ), 0xF4F3F2F1 );
+
+    BOOST_TEST_EQ( load_big_s32( v ), 0xF1F2F3F4 );
+    BOOST_TEST_EQ( load_big_u32( v ), 0xF1F2F3F4 );
+
+    // 40
+
+    BOOST_TEST_EQ( load_little_s40( v ), -43135012111 );
+    BOOST_TEST_EQ( load_little_u40( v ), 0xF5F4F3F2F1 );
+
+    BOOST_TEST_EQ( load_big_s40( v ), -60348435211 );
+    BOOST_TEST_EQ( load_big_u40( v ), 0xF1F2F3F4F5 );
+
+    // 48
+
+    BOOST_TEST_EQ( load_little_s48( v ), -9938739662095 );
+    BOOST_TEST_EQ( load_little_u48( v ), 0xF6F5F4F3F2F1 );
+
+    BOOST_TEST_EQ( load_big_s48( v ), -15449199413770 );
+    BOOST_TEST_EQ( load_big_u48( v ), 0xF1F2F3F4F5F6 );
+
+    // 56
+
+    BOOST_TEST_EQ( load_little_s56( v ), -2261738553347343 );
+    BOOST_TEST_EQ( load_little_u56( v ), 0xF7F6F5F4F3F2F1 );
+
+    BOOST_TEST_EQ( load_big_s56( v ), -3954995049924873 );
+    BOOST_TEST_EQ( load_big_u56( v ), 0xF1F2F3F4F5F6F7 );
+
+    // 64
+
+    BOOST_TEST_EQ( load_little_s64( v ), 0xF8F7F6F5F4F3F2F1 );
+    BOOST_TEST_EQ( load_little_u64( v ), 0xF8F7F6F5F4F3F2F1 );
+
+    BOOST_TEST_EQ( load_big_s64( v ), 0xF1F2F3F4F5F6F7F8 );
+    BOOST_TEST_EQ( load_big_u64( v ), 0xF1F2F3F4F5F6F7F8 );
+
+    return boost::report_errors();
+}