First commit

test/test_to_string.cpp

@@ -0,0 +1,108 @@
+/******************************************************************************
+The MIT License(MIT)
+
+Embedded Template Library.
+https://github.com/ETLCPP/etl
+https://www.etlcpp.com
+
+Copyright(c) 2019 jwellbelove
+
+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 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 "UnitTest++.h"
+
+#include <string>
+
+#include "etl/cstring.h"
+
+#undef STR
+#define STR(x) x
+
+namespace
+{
+  /* A utility function to reverse a string  */
+  void reverse(char str[], int length)
+  {
+    int start = 0;
+    int end = length - 1;
+    while (start < end)
+    {
+      std::swap(*(str + start), *(str + end));
+      start++;
+      end--;
+    }
+  }
+
+  // Implementation of itoa() 
+  char* itoa(int num, char* str, int base)
+  {
+    int i = 0;
+    bool isNegative = false;
+
+    /* Handle 0 explicitely, otherwise empty string is printed for 0 */
+    if (num == 0)
+    {
+      str[i++] = '0';
+      str[i] = '\0';
+      return str;
+    }
+
+    // In standard itoa(), negative numbers are handled only with  
+    // base 10. Otherwise numbers are considered unsigned. 
+    if (num < 0 && base == 10)
+    {
+      isNegative = true;
+      num = -num;
+    }
+
+    // Process individual digits 
+    while (num != 0)
+    {
+      int rem = num % base;
+      str[i++] = (rem > 9) ? (rem - 10) + 'a' : rem + '0';
+      num = num / base;
+    }
+
+    // If number is negative, append '-' 
+    if (isNegative)
+      str[i++] = '-';
+
+    str[i] = '\0'; // Append string terminator 
+
+    // Reverse the string 
+    reverse(str, i);
+
+    return str;
+  }
+
+  SUITE(test_string_char)
+  {
+    //*************************************************************************
+    TEST(test_x)
+    {
+      char str[100];
+      itoa(1567, str, 10);
+      itoa(-1567, str, 10);
+      itoa(1567, str, 2);
+      itoa(1567, str, 8);
+      itoa(1567, str, 16);
+    }
+  };
+}

test/vs2017/etl.vcxproj

@@ -745,6 +745,7 @@
     <ClCompile Include="..\test_string_view.cpp" />
     <ClCompile Include="..\test_string_wchar_t.cpp" />
     <ClCompile Include="..\test_task_scheduler.cpp" />
+    <ClCompile Include="..\test_to_string.cpp" />
     <ClCompile Include="..\test_type_def.cpp" />
     <ClCompile Include="..\test_type_lookup.cpp" />
     <ClCompile Include="..\test_type_select.cpp" />

test/vs2017/etl.vcxproj.filters

@@ -1163,6 +1163,9 @@
     <ClCompile Include="..\test_queue_spsc_locked_small.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\test_to_string.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\library.properties">