cmedfloat/cli/medfloat32_decode.c at main · dottspina/cmedfloat · GitHub

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/*
 * Copyright (c) 2025, Christophe Dufaza
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <stdint.h>
#include <stdio.h>

#include "cmedfloat/medfloat32.h"

#include "cmedfloat_cli_utils.h"

static inline void usage(void)
{
	printf("usage: medfloat32-decode <medfloat>\n");
	puts("");
	puts("<medfloat>  medfloat32 data, e.g. 0x07EFEF01");
}

int main(int argc, char *argv[])
{
	struct cmedfloat_cli_args_decode cli_args;
	struct cmedfloat_medfloat32 mfloat32;
	double x;

	if (!cmedfloat_cli_decode_parse_args(argc, argv, &cli_args, true)) {
		return -1;
	}
	if (cli_args.opt_h) {
		usage();
		return 0;
	}

	mfloat32 = cmedfloat_medfloat32_decode(cli_args.data32);
	x = cmedfloat_medfloat32_to_double(mfloat32);

	if (cmedfloat_medfloat32_isnres(mfloat32)) {
		printf("0x%02x%02x%02x%02x    NRes\n", cli_args.data32[0], cli_args.data32[1],
		       cli_args.data32[2], cli_args.data32[3]);
		return 0;
	}
	if (cmedfloat_medfloat32_isrfu(mfloat32)) {
		printf("0x%02x%02x%02x%02x    RFU\n", cli_args.data32[0], cli_args.data32[1],
		       cli_args.data32[2], cli_args.data32[3]);
		return 0;
	}

	if (cmedfloat_medfloat32_isnormal(mfloat32)) {
		printf("0x%02x%02x%02x%02x    %de%d\n", cli_args.data32[0], cli_args.data32[1],
		       cli_args.data32[2], cli_args.data32[3], mfloat32.m, mfloat32.e);
	} else {
		/* Print Nan and +/-INFINITY with %f. */
		printf("0x%02x%02x%02x%02x    %f\n", cli_args.data32[0], cli_args.data32[1],
		       cli_args.data32[2], cli_args.data32[3], x);
	}

	return 0;
}