This is a small implementation of printf/sprintf family of functions taken from MSP libc library. It has built-in conversion code but it is not a standalone implementation. It depends on some libc functions and headers.
- strlen
- stdlib.h
- stdbool.h
- stdarg.h
- string.h
- stdint.h
- limits.h
- stdio.h
- features.h
| Option name | Description |
|---|---|
| MSP_PRINTF_ENABLE_LONGLONG | Enable support for 64-bit long long int. |
| MSP_PRINTF_ENABLE_LONG | Enable support for 32-bit long int. |
| PRINTF_USE_MSP | Enable standard libc function names as aliases to msp_* functions |
All functions have the same signature as in the libc (except the msp_ prefix and non-standard function init_msp_printf):
void init_msp_printf(int (*putf) (int));
int msp_puts (const char *s);
int msp_vuprintf (void* outp, int (*write_char)(void*, int), const char *format, va_list args);
int msp_vprintf (const char *fmt, va_list argp);
int msp_vsprintf (char *buf, const char *fmt, va_list argp);
int msp_vsnprintf (char *buf, size_t size, const char *fmt, va_list argp);
int msp_uprintf (int (*func) (int c), const char *fmt, ...);
int msp_printf (const char *fmt, ...);
int msp_sprintf (char *buf, const char *fmt, ...);
int msp_snprintf (char *buf, size_t size, const char *fmt, ...);
Note that you first have to call init_msp_printf() to set I/O callback function like putchar() that will be used for actual printing.
If you define compile time symbol PRINTF_USE_MSP all functions will we visible as the standard library's names, without msp_ prefix.