Function itoa

Sming/System/include/stringconversion.h:38–41

#ifndef ARCH_ESP32
static inline char* itoa (int val, char* buffer, int base)
{
	return ltoa_wp(val, buffer, base, 0, ' ');
}
#endif

extern char* ultoa_wp(unsigned long val, char* buffer, unsigned int base, int width, char pad);