Jonne Valola
PokittoLib is the library needed for programming the Pokitto DIY game console (www.pokitto.com)
Dependents: YATTT sd_map_test cPong SnowDemo ... more
PokittoLib
Library for programming Pokitto hardware
How to Use
- Import this library to online compiler (see button "import" on the right hand side
- DO NOT import mbed-src anymore, a better version is now included inside PokittoLib
- Change My_settings.h according to your project
- Start coding!
Diff: POKITTO_CORE/PokittoItoa.cpp
- Revision:
- 66:6281a40d73e6
- Parent:
- 31:f4b9b85c7b62
--- a/POKITTO_CORE/PokittoItoa.cpp Sat Mar 23 19:22:35 2019 +0000
+++ b/POKITTO_CORE/PokittoItoa.cpp Sat Mar 23 20:03:34 2019 +0000
@@ -38,6 +38,21 @@
#include <string.h>
#include <stdint.h>
+/* A utility function to reverse a string */
+void reverse(char str[], int length)
+{
+ int start = 0;
+ int end = length -1;
+ while (start < end)
+ {
+ char t = *(str+end);
+ *(str+end) = *(str+start);
+ *(str+start) = t;
+ //std::swap(*(str+start), *(str+end));
+ start++;
+ end--;
+ }
+}
void pokItoa(uint16_t value, char *str, int base)
{
@@ -134,8 +149,44 @@
pokItoa(value,str,base);
}
-void pokLtoa(long value, char *str, int base) {
- pokItoa(value,str,base);
+void pokLtoa(long 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;
}