4  * SPDX-License-Identifier: Apache-2.0
26 	int32_t e = -1, v, f = 0;  in lwm2m_float_to_b32()
28 	int32_t val2 = (*in - (int32_t)*in) * PRECISION32;  in lwm2m_float_to_b32()
32 		return -EINVAL;  in lwm2m_float_to_b32()
64 			/* handle -e */  in lwm2m_float_to_b32()
65 			e--;  in lwm2m_float_to_b32()
68 			v -= PRECISION32;  in lwm2m_float_to_b32()
69 			f |= 1 << (22 - i);  in lwm2m_float_to_b32()
91 	/* exponent: bits 30-23 */  in lwm2m_float_to_b32()
95 	/* fraction: bits 22-0 */  in lwm2m_float_to_b32()
108 	int32_t e = -1;  in lwm2m_float_to_b64()
110 	int64_t val2 = (*in - (int64_t)*in) * PRECISION64;  in lwm2m_float_to_b64()
114 		return -EINVAL;  in lwm2m_float_to_b64()
146 			/* handle -e */  in lwm2m_float_to_b64()
147 			e--;  in lwm2m_float_to_b64()
150 			v -= PRECISION64;  in lwm2m_float_to_b64()
151 			f |= (int64_t)1 << (51 - i);  in lwm2m_float_to_b64()
173 	/* exponent: bits 62-52 */  in lwm2m_float_to_b64()
177 	/* fraction: bits 51-0 */  in lwm2m_float_to_b64()
182 	b64[4] = (f >> 24) & 0xFF;  in lwm2m_float_to_b64()
183 	b64[5] = (f >> 16) & 0xFF;  in lwm2m_float_to_b64()
193 	int32_t f, k, i, e;  in lwm2m_b32_to_float()  local
198 		return -EINVAL;  in lwm2m_b32_to_float()
207 	/* calc exponent: bits 30-23 */  in lwm2m_b32_to_float()
211 	e -= 127;  in lwm2m_b32_to_float()
213 	/* enable "hidden" fraction bit 24 which is always 1 */  in lwm2m_b32_to_float()
215 	/* calc fraction: bits 22-0 */  in lwm2m_b32_to_float()
221 	if (e > -1) {  in lwm2m_b32_to_float()
227 		val1 = (f >> (23 - e)) * (sign ? -1 : 1);  in lwm2m_b32_to_float()
231 	k = PRECISION32;  in lwm2m_b32_to_float()
233 	/* account for -e */  in lwm2m_b32_to_float()
234 	while (e < -1) {  in lwm2m_b32_to_float()
235 		k /= 2;  in lwm2m_b32_to_float()
239 	for (i = 22 - e; i >= 0; i--) {  in lwm2m_b32_to_float()
240 		k /= 2;  in lwm2m_b32_to_float()
242 			val2 += k;  in lwm2m_b32_to_float()
248 		*out = (double)val1 - (double)val2 / PRECISION32;  in lwm2m_b32_to_float()
259 	int64_t f, k;  in lwm2m_b64_to_float()  local
265 		return -EINVAL;  in lwm2m_b64_to_float()
274 	/* get exponent: bits 62-52 */  in lwm2m_b64_to_float()
278 	e -= 1023;  in lwm2m_b64_to_float()
282 	/* get fraction: bits 51-0 */  in lwm2m_b64_to_float()
286 	f += ((int64_t)b64[4] << 24);  in lwm2m_b64_to_float()
287 	f += ((int64_t)b64[5] << 16);  in lwm2m_b64_to_float()
292 	if (e > -1) {  in lwm2m_b64_to_float()
298 		val1 = (f >> (52 - e)) * (sign ? -1 : 1);  in lwm2m_b64_to_float()
302 	k = PRECISION64;  in lwm2m_b64_to_float()
304 	/* account for -e */  in lwm2m_b64_to_float()
305 	while (e < -1) {  in lwm2m_b64_to_float()
306 		k /= 2;  in lwm2m_b64_to_float()
310 	for (i = 51 - e; i >= 0; i--) {  in lwm2m_b64_to_float()
311 		k /= 2;  in lwm2m_b64_to_float()
313 			val2 += k;  in lwm2m_b64_to_float()
319 		*out = (double)val1 - (double)val2 / PRECISION64;  in lwm2m_b64_to_float()
329 	char *pos, *end, buf[24];  in lwm2m_atof()
335 		return -EINVAL;  in lwm2m_atof()
338 	strncpy(buf, input, sizeof(buf) - 1);  in lwm2m_atof()
339 	buf[sizeof(buf) - 1] = '\0';  in lwm2m_atof()
341 	if (strchr(buf, '-')) {  in lwm2m_atof()
342 		sign = -1;  in lwm2m_atof()
353 		return -EINVAL;  in lwm2m_atof()
365 		val2 = val2 * 10 + (*pos - '0');  in lwm2m_atof()
373 	return !*pos || base == 1 ? 0 : -EINVAL;  in lwm2m_atof()
381 	int64_t val2 = (*input - (int64_t)*input) * PRECISION64;  in lwm2m_ftoa()
391 			bool round_up = buf[dec_limit] >= '5';  in lwm2m_ftoa()
397 				dec_limit--;  in lwm2m_ftoa()
409 					val1--;  in lwm2m_ftoa()
417 		while (len > 1U && buf[len - 1] == '0') {  in lwm2m_ftoa()
418 			buf[--len] = '\0';  in lwm2m_ftoa()
424 			(val1 == 0 && val2 < 0) ? "-" : "", (long long)val1, buf);  in lwm2m_ftoa()
432 	/* we should get a value first - consume all numbers */  in lwm2m_atou16()
434 		val = val * 10U + (buf[pos] - '0');  in lwm2m_atou16()
446 	int i, tokstart = -1, toklen;  in lwm2m_string_to_path()
447 	int end_index = strlen(pathstr) - 1;  in lwm2m_string_to_path()
452 		if (tokstart == -1) {  in lwm2m_string_to_path()
462 			toklen = i - tokstart + 1;  in lwm2m_string_to_path()
466 				toklen--;  in lwm2m_string_to_path()
475 			path->level++;  in lwm2m_string_to_path()
476 			switch (path->level) {  in lwm2m_string_to_path()
478 				path->obj_id = value;  in lwm2m_string_to_path()
482 				path->obj_inst_id = value;  in lwm2m_string_to_path()
486 				path->res_id = value;  in lwm2m_string_to_path()
490 				path->res_inst_id = value;  in lwm2m_string_to_path()
494 				return -EINVAL;  in lwm2m_string_to_path()
498 			tokstart = -1;  in lwm2m_string_to_path()
507 	uint8_t level = a->level;  in lwm2m_obj_path_equal()
509 	if (a->level != b->level) {  in lwm2m_obj_path_equal()
513 	if (level >= LWM2M_PATH_LEVEL_OBJECT && (a->obj_id != b->obj_id)) {  in lwm2m_obj_path_equal()
517 	if (level >= LWM2M_PATH_LEVEL_OBJECT_INST && (a->obj_inst_id != b->obj_inst_id)) {  in lwm2m_obj_path_equal()
521 	if (level >= LWM2M_PATH_LEVEL_RESOURCE && (a->res_id != b->res_id)) {  in lwm2m_obj_path_equal()
525 	if (level >= LWM2M_PATH_LEVEL_RESOURCE_INST && (a->res_inst_id != b->res_inst_id)) {  in lwm2m_obj_path_equal()
537 	if (addr->sa_family == AF_INET6) {  in lwm2m_sprint_ip_addr()
538 		return net_addr_ntop(AF_INET6, &net_sin6(addr)->sin6_addr, buf, sizeof(buf));  in lwm2m_sprint_ip_addr()
541 	if (addr->sa_family == AF_INET) {  in lwm2m_sprint_ip_addr()
542 		return net_addr_ntop(AF_INET, &net_sin(addr)->sin_addr, buf, sizeof(buf));  in lwm2m_sprint_ip_addr()
551 		return digit - 10U + 'a';  in to_hex_digit()
565 		tkl = MIN(tkl, sizeof(buf) / 2 - 1);  in sprint_token()
574 		strcpy(buf, "[no-token]");  in sprint_token()