view librftab/smallconv.c @ 965:2969032bdfac

fcup-smsend[mult]: fix buglet in K&R C NULL pointer passing The only 100% safe way to pass a NULL pointer as a function argument in K&R C is to cast 0 to a pointer type; failing to do so may cause mysterious bugs (invalid stack frames or garbage in argument registers) on 64-bit machines. This issue has already been fixed in most of FC host tools, but I just found some missed spots: passing of NULL UDH to PDU encoding functions in fcup-smsend[mult] in the case of single (not concatenated) SMS.
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 01 Sep 2023 07:33:51 +0000
parents b73c21a2148f
children
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/*
 * /gsm/rf/afcdac and /gsm/rf/stdmap each store a single 16-bit value,
 * and are not tables in the rftw/rftr sense, hence the code in rftablewr.c
 * does not handle these two.  However, in fc-cal2text we would like to
 * handle their conversion from binary to ASCII the same way as the bigger
 * tables, hence the two functions in this module.
 */

#include <sys/types.h>
#include <stdio.h>
#include <stdint.h>
#include <endian.h>

void
write_afcdac_ascii(bin, outf)
	uint16_t *bin;
	FILE *outf;
{
	int i;

	i = le16toh(*bin);
	if (i >= 32768)
		i -= 65536;
	fprintf(outf, "%d\n", i);
}

void
write_stdmap_ascii(bin, outf)
	uint16_t *bin;
	FILE *outf;
{
	int i;

	i = le16toh(*bin);
	fprintf(outf, "0x%04X\n", i);
}