mirror of https://gerrit.osmocom.org/libosmocore
191 lines
7.6 KiB
C
191 lines
7.6 KiB
C
/*! \addtogroup gad
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* @{
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* \file gad.h
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* Message encoding and decoding for 3GPP TS 23.032 GAD: Universal Geographical Area Description.
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*/
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/*
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* (C) 2020 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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*
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* All Rights Reserved
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*
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* Author: Neels Hofmeyr <neels@hofmeyr.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include <osmocom/gsm/protocol/gsm_23_032.h>
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#include <osmocom/core/utils.h>
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struct msgb;
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struct osmo_gad_ell_point {
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/*! Latitude in micro degrees (degrees * 1e6), -90'000'000 (S) .. 90'000'000 (N). */
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int32_t lat;
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/*! Longitude in micro degrees (degrees * 1e6), -180'000'000 (W) .. 180'000'000 (E). */
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int32_t lon;
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};
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struct osmo_gad_ell_point_unc_circle {
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/*! Latitude in micro degrees (degrees * 1e6), -90'000'000 (S) .. 90'000'000 (N). */
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int32_t lat;
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/*! Longitude in micro degrees (degrees * 1e6), -180'000'000 (W) .. 180'000'000 (E). */
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int32_t lon;
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/*! Uncertainty circle radius in millimeters (m * 1e3), 0 .. 18'000'000. */
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uint32_t unc;
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};
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struct osmo_gad_ell_point_unc_ellipse {
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/*! Latitude in micro degrees (degrees * 1e6), -90'000'000 (S) .. 90'000'000 (N). */
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int32_t lat;
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/*! Longitude in micro degrees (degrees * 1e6), -180'000'000 (W) .. 180'000'000 (E). */
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int32_t lon;
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/*! Uncertainty ellipsoid radius of major axis in millimeters, 0 .. 18'000'000.
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* Coding of uncertainty is non-linear, use osmo_gad_dec_unc(osmo_gad_enc_unc(val)) to clamp. */
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uint32_t unc_semi_major;
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/*! Uncertainty ellipsoid radius of minor axis in millimeters, 0 .. 18'000'000.
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* Coding of uncertainty is non-linear, use osmo_gad_dec_unc(osmo_gad_enc_unc(val)) to clamp. */
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uint32_t unc_semi_minor;
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/*! Major axis orientation in degrees (DEG), 0 (N) .. 90 (E) .. 179 (SSE). */
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uint8_t major_ori;
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/*! Confidence in percent, 0 = no information, 1..100%, 101..128 = no information. */
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uint8_t confidence;
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};
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struct osmo_gad_polygon {
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uint8_t num_points;
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struct osmo_gad_ell_point point[15];
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};
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struct osmo_gad_ell_point_alt {
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/*! latitude in micro degrees (degrees * 1e6), -90'000'000 (S) .. 90'000'000 (N). */
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int32_t lat;
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/*! longitude in micro degrees (degrees * 1e6), -180'000'000 (W) .. 180'000'000 (E). */
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int32_t lon;
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/*! Altitude in meters, -32767 (depth) .. 32767 (height) */
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int16_t alt;
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};
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struct osmo_gad_ell_point_alt_unc_ell {
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/*! latitude in micro degrees (degrees * 1e6), -90'000'000 (S) .. 90'000'000 (N). */
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int32_t lat;
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/*! longitude in micro degrees (degrees * 1e6), -180'000'000 (W) .. 180'000'000 (E). */
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int32_t lon;
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/*! Altitude in meters, -32767 (depth) .. 32767 (height) */
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int16_t alt;
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/*! Uncertainty ellipsoid radius of major axis in millimeters, 0 .. 18'000'000.
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* Coding of uncertainty is non-linear, use osmo_gad_dec_unc(osmo_gad_enc_unc(val)) to clamp. */
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uint32_t unc_semi_major;
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/*! Uncertainty ellipsoid radius of minor axis in millimeters, 0 .. 18'000'000.
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* Coding of uncertainty is non-linear, use osmo_gad_dec_unc(osmo_gad_enc_unc(val)) to clamp. */
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uint32_t unc_semi_minor;
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/*! Major axis orientation in degrees (DEG), 0 (N) .. 90 (E) .. 179 (SSE). */
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uint8_t major_ori;
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/*! Uncertainty altitude in millimeters, 0 .. 990'000.
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* Coding of uncertainty altitude is non-linear, and distinct from the non-altitude uncertainty coding. Use
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* osmo_gad_dec_unc_alt(osmo_gad_enc_unc_alt(val)) to clamp. */
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int32_t unc_alt;
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/*! Confidence in percent, 0 = no information, 1..100%, 101..128 = no information. */
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uint8_t confidence;
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};
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struct osmo_gad_ell_arc {
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/*! latitude in micro degrees (degrees * 1e6), -90'000'000 (S) .. 90'000'000 (N). */
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int32_t lat;
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/*! longitude in micro degrees (degrees * 1e6), -180'000'000 (W) .. 180'000'000 (E). */
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int32_t lon;
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/*! inner circle radius in mm (m * 1e3) */
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uint32_t inner_r;
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/*! Uncertainty circle radius in millimeters, 0 .. 18'000'000.
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* Coding of uncertainty is non-linear, use osmo_gad_dec_unc(osmo_gad_enc_unc(val)) to clamp. */
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uint32_t unc_r;
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/*! Offset angle of first arc edge in degrees from North clockwise (eastwards), 0..359.
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* Angle is coded in increments of 2 degrees. */
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uint16_t ofs_angle;
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/*! Included angle defining the angular width of the arc, in degrees clockwise, 1..360.
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* Angle is coded in increments of 2 degrees. */
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uint16_t incl_angle;
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/*! Confidence in percent, 0 = no information, 1..100%, 101..128 = no information. */
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uint8_t confidence;
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};
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struct osmo_gad_ha_ell_point_alt_unc_ell {
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/*! latitude in micro degrees (degrees * 1e6), -90'000'000 (S) .. 90'000'000 (N). */
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int32_t lat;
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/*! longitude in micro degrees (degrees * 1e6), -180'000'000 (W) .. 180'000'000 (E). */
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int32_t lon;
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/*! Altitude in millimeters, -500'000 (depth) .. 10'000'000 (height) */
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int32_t alt;
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/*! Uncertainty ellipsoid radius of major axis in millimeters, 0 .. 46'491.
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* Coding of high-accuracy uncertainty is non-linear, use osmo_gad_dec_ha_unc(osmo_gad_enc_ha_unc(val)) to
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* clamp. */
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uint32_t unc_semi_major;
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/*! Uncertainty ellipsoid radius of minor axis in millimeters, 0 .. 46'491.
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* Coding of high-accuracy uncertainty is non-linear, use osmo_gad_dec_ha_unc(osmo_gad_enc_ha_unc(val)) to
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* clamp. */
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uint32_t unc_semi_minor;
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/*! Major axis orientation in degrees (DEG), 0 (N) .. 90 (E) .. 179 (SSE). */
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uint8_t major_ori;
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/*! Horizontal confidence in percent, 0 = no information, 1..100%, 101..128 = no information. */
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uint8_t h_confidence;
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/*! High-Accuracy uncertainty altitude */
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int32_t unc_alt;
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/*! Vertical confidence in percent, 0 = no information, 1..100%, 101..128 = no information. */
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uint8_t v_confidence;
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};
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struct osmo_gad {
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enum gad_type type;
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union {
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struct osmo_gad_ell_point ell_point;
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struct osmo_gad_ell_point_unc_circle ell_point_unc_circle;
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struct osmo_gad_ell_point_unc_ellipse ell_point_unc_ellipse;
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struct osmo_gad_polygon polygon;
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struct osmo_gad_ell_point_alt ell_point_alt;
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struct osmo_gad_ell_point_alt_unc_ell ell_point_alt_unc_ell;
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struct osmo_gad_ell_arc ell_arc;
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struct osmo_gad_ell_point_unc_ellipse ha_ell_point_unc_ellipse;
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struct osmo_gad_ha_ell_point_alt_unc_ell ha_ell_point_alt_unc_ell;
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};
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};
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struct osmo_gad_err {
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int rc;
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enum gad_type type;
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char *logmsg;
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};
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extern const struct value_string osmo_gad_type_names[];
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static inline const char *osmo_gad_type_name(enum gad_type val)
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{ return get_value_string(osmo_gad_type_names, val); }
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int osmo_gad_raw_write(struct msgb *msg, const union gad_raw *gad_raw);
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int osmo_gad_raw_read(union gad_raw *gad_raw, struct osmo_gad_err **err, void *err_ctx, const uint8_t *data, uint8_t len);
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int osmo_gad_enc(union gad_raw *gad_raw, const struct osmo_gad *gad);
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int osmo_gad_dec(struct osmo_gad *gad, struct osmo_gad_err **err, void *err_ctx, const union gad_raw *gad_raw);
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int osmo_gad_to_str_buf(char *buf, size_t buflen, const struct osmo_gad *gad);
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char *osmo_gad_to_str_c(void *ctx, const struct osmo_gad *gad);
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uint32_t osmo_gad_enc_lat(int32_t deg_1e6);
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int32_t osmo_gad_dec_lat(uint32_t lat);
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uint32_t osmo_gad_enc_lon(int32_t deg_1e6);
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int32_t osmo_gad_dec_lon(uint32_t lon);
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uint8_t osmo_gad_enc_unc(uint32_t mm);
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uint32_t osmo_gad_dec_unc(uint8_t unc);
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/*! @} */
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