mirror of
https://github.com/esp8266/Arduino.git
synced 2025-10-31 15:50:55 +03:00
6883beedec
* Remove broken ltoa/ultoa, call itoa/utoa Use the newlib integer-to-ASCII non-POSIX calls instead of rolling our own. Should be safe as sizeof(long) == sizeof(int). The custom functions behaved differently from itoa when passed in negative values in non-base-10. Add host tests for negative non-base-10 int/longs
100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/*
|
|
noniso.cpp - replacements for non-ISO functions used by Arduino core
|
|
Copyright © 2016 Ivan Grokhotkov
|
|
|
|
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.
|
|
*/
|
|
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <math.h>
|
|
#include "stdlib_noniso.h"
|
|
|
|
|
|
void reverse(char* begin, char* end) {
|
|
char *is = begin;
|
|
char *ie = end - 1;
|
|
while(is < ie) {
|
|
char tmp = *ie;
|
|
*ie = *is;
|
|
*is = tmp;
|
|
++is;
|
|
--ie;
|
|
}
|
|
}
|
|
|
|
char* utoa(unsigned value, char* result, int base) {
|
|
if(base < 2 || base > 16) {
|
|
*result = 0;
|
|
return result;
|
|
}
|
|
|
|
char* out = result;
|
|
unsigned quotient = value;
|
|
|
|
do {
|
|
const unsigned tmp = quotient / base;
|
|
*out = "0123456789abcdef"[quotient - (tmp * base)];
|
|
++out;
|
|
quotient = tmp;
|
|
} while(quotient);
|
|
|
|
reverse(result, out);
|
|
*out = 0;
|
|
return result;
|
|
}
|
|
|
|
char* itoa(int value, char* result, int base) {
|
|
if(base < 2 || base > 16) {
|
|
*result = 0;
|
|
return result;
|
|
}
|
|
if (base != 10) {
|
|
return utoa((unsigned)value, result, base);
|
|
}
|
|
|
|
char* out = result;
|
|
int quotient = abs(value);
|
|
|
|
do {
|
|
const int tmp = quotient / base;
|
|
*out = "0123456789abcdef"[quotient - (tmp * base)];
|
|
++out;
|
|
quotient = tmp;
|
|
} while(quotient);
|
|
|
|
// Apply negative sign
|
|
if(value < 0)
|
|
*out++ = '-';
|
|
|
|
reverse(result, out);
|
|
*out = 0;
|
|
return result;
|
|
}
|
|
|
|
int atoi(const char* s) {
|
|
return (int) atol(s);
|
|
}
|
|
|
|
long atol(const char* s) {
|
|
char * tmp;
|
|
return strtol(s, &tmp, 10);
|
|
}
|
|
|
|
double atof(const char* s) {
|
|
char * tmp;
|
|
return strtod(s, &tmp);
|
|
}
|
|
|