Function string2hex

ut.h:461–484

double output length assumed ; does NOT zero-terminate */

/* double output length assumed ; does NOT zero-terminate */
inline static int string2hex(
	/* input */ const char *str, int len,
	/* output */ char *hex )
{
	int orig_len;

	if (len==0) {
		*hex='0';
		return 1;
	}

	orig_len=len;
	while ( len ) {

		*hex=fourbits2char[((*str) >> 4) & 0x0f];
		hex++;
		*hex=fourbits2char[(*str) & 0x0f];
		hex++;
		len--;
		str++;

	}
	return orig_len * 2;
}

inline static int hex2string(
	/* input */ const char *str, int len,