76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/* packet-ppi-geolocation-common.c
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* Routines for PPI-GEOLOCATION dissection
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* Copyright 2010, Harris Corp, jellch@harris.com
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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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 General Public License as published by
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* the Free Software Foundation; either version 2 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <glib.h>
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#include "packet-ppi-geolocation-common.h"
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/*
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* input: a unsigned 32-bit (native endian) value between 0 and 3600000000 (inclusive)
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* output: a signed floating point value betwen -180.0000000 and + 180.0000000, inclusive)
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*/
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gdouble ppi_fixed3_7_to_gdouble(guint32 in) {
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gint32 remapped_in = in - (180 * 10000000);
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gdouble ret = (gdouble) ((gdouble) remapped_in / 10000000);
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return ret;
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}
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/*
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* input: a native 32 bit unsigned value between 0 and 999999999
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* output: a positive floating point value between 000.0000000 and 999.9999999
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*/
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gdouble ppi_fixed3_6_to_gdouble(guint32 in) {
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gdouble ret = (gdouble) in / 1000000.0;
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return ret;
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}
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/*
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* input: a native 32 bit unsigned value between 0 and 3600000000
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* output: a signed floating point value between -180000.0000 and +180000.0000
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*/
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gdouble ppi_fixed6_4_to_gdouble(guint32 in) {
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gint32 remapped_in = in - (180000 * 10000);
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gdouble ret = (gdouble) ((gdouble) remapped_in / 10000);
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return ret;
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}
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gdouble ppi_ns_counter_to_gdouble(guint32 in) {
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gdouble ret;
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ret = (gdouble) in / 1000000000;
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return ret;
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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