Functions added:

• fprintf/vfprintf
• asprintf/vasprintf
• ti_sprintf,ti_snprintf, and ti_asprintf to <ce/include/ti_sprintf.h>

fprintf redirects the output of nano_printf to fputc

asprintf is implemented via two calls to snprintf #543

ti_sprintf makes explicit calls to the C89 sprintf from OS_LIBC. This can reduce binary sizes significantly compared to nano_printf

ti_snprintf and ti_asprintf write to unmapped memory 0xFC1000 to get the size of the output. Writing to 0xFB0000 also works, but will output to the CEmu console. Otherwise, writing to 0xFC1000 should be okay unless the output exceeds ~258000 characters. Because ti_vsprintf doesn't exist, they are both implemented as macros, and will evaluate __VA_ARGS__ twice.

ti_asprintf will malloc a buffer that ti_sprintf will write to, returning NULL on malloc failure. The buffer shall be deallocated with free

ti_snprintf will return an empty string if the result of ti_sprintf won't fit inside the buffer. This was done to make the routine more compact, as implementing the truncation behavior of snprintf would require calls to malloc. If the user wants the output to be truncated, they can use ti_asprintf and strncpy

char buf[20];
char* temp;
ti_asprintf(&temp, format, ...);
if (temp != NULL) {
	strncpy(buf, temp, sizeof(buf));
	free(temp);
}