Convert bitmap to an ascii hex string.
int bitmap_scnprintf(char * buf, unsigned int buflen, const unsigned long * maskp, int nmaskbits);
buf
byte buffer into which string is placed
buflen
reserved size of buf, in bytes
maskp
pointer to bitmap to convert
nmaskbits
size of bitmap, in bits
Exactly nmaskbits bits are displayed. Hex digits are grouped into comma-separated sets of eight digits per set. Returns the number of characters which were written to *buf, excluding the trailing \0.