summaryrefslogtreecommitdiffstats
path: root/dvb-t/se-Hallaryd
diff options
context:
space:
mode:
authorJonathan McCrohan <jmccrohan@gmail.com>2014-04-05 16:53:45 +0100
committerJonathan McCrohan <jmccrohan@gmail.com>2014-04-05 16:53:45 +0100
commit1a75269c26b00de927262a10ef06374226e7a3c4 (patch)
tree807be660948c3e16f726fc97c97f6fb1b96355aa /dvb-t/se-Hallaryd
parent5f5c34e8e0758f5f9480302d38345257ced3251e (diff)
downloaddtv-scan-tables-1a75269c26b00de927262a10ef06374226e7a3c4.tar.gz
d/control: update Homepage (upstream has moved from Gitweb to cgit)
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.39.1) at 2025-07-10 05:24:02 +0000
148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 
/* $Id: plugin_math.c,v 1.9 2005/05/08 04:32:44 reinelt Exp $
 *
 * math plugin
 *
 * Copyright (C) 2003 Michael Reinelt <reinelt@eunet.at>
 * Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
 *
 * This file is part of LCD4Linux.
 *
 * LCD4Linux is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * LCD4Linux is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 * $Log: plugin_math.c,v $
 * Revision 1.9  2005/05/08 04:32:44  reinelt
 * CodingStyle added and applied
 *
 * Revision 1.8  2005/04/05 04:46:06  reinelt
 * ceil/floor patch from Maxime
 *
 * Revision 1.7  2005/01/18 06:30:23  reinelt
 * added (C) to all copyright statements
 *
 * Revision 1.6  2004/06/26 12:05:00  reinelt
 *
 * uh-oh... the last CVS log message messed up things a lot...
 *
 * Revision 1.5  2004/06/26 09:27:21  reinelt
 *
 * added '-W' to CFLAGS
 * changed all C++ comments to C ones
 * cleaned up a lot of signed/unsigned mistakes
 *
 * Revision 1.4  2004/03/06 20:31:16  reinelt
 * Complete rewrite of the evaluator to get rid of the code
 * from mark Morley (because of license issues).
 * The new Evaluator does a pre-compile of expressions, and
 * stores them in trees. Therefore it should be reasonable faster...
 *
 * Revision 1.3  2004/03/03 03:47:04  reinelt
 * big patch from Martin Hejl:
 * - use qprintf() where appropriate
 * - save CPU cycles on gettimeofday()
 * - add quit() functions to free allocated memory
 * - fixed lots of memory leaks
 *
 * Revision 1.2  2004/01/29 04:40:02  reinelt
 * every .c file includes "config.h" now
 *
 * Revision 1.1  2003/12/19 05:50:34  reinelt
 * added plugin_math.c and plugin_string.c
 *
 */

/* 
 * exported functions:
 *
 * int plugin_init_math (void)
 *  adds some handy constants and functions
 *
 */


#include "config.h"

#include <stdlib.h>
#include <stdio.h>
#include <math.h>

#include "debug.h"
#include "plugin.h"


static void my_sqrt(RESULT * result, RESULT * arg1)
{
    double value = sqrt(R2N(arg1));
    SetResult(&result, R_NUMBER, &value);
}

static void my_exp(RESULT * result, RESULT * arg1)
{
    double value = exp(R2N(arg1));
    SetResult(&result, R_NUMBER, &value);
}

static void my_ln(RESULT * result, RESULT * arg1)
{
    double value = log(R2N(arg1));
    SetResult(&result, R_NUMBER, &value);
}

static void my_log(RESULT * result, RESULT * arg1)
{
    double value = log10(R2N(arg1));
    SetResult(&result, R_NUMBER, &value);
}

static void my_sin(RESULT * result, RESULT * arg1)
{
    double value = sin(R2N(arg1));
    SetResult(&result, R_NUMBER, &value);
}

static void my_cos(RESULT * result, RESULT * arg1)
{
    double value = cos(R2N(arg1));
    SetResult(&result, R_NUMBER, &value);
}

static void my_tan(RESULT * result, RESULT * arg1)
{
    double value = tan(R2N(arg1));
    SetResult(&result, R_NUMBER, &value);
}


static void my_min(RESULT * result, RESULT * arg1, RESULT * arg2)
{
    double a1 = R2N(arg1);
    double a2 = R2N(arg2);
    double value = a1 < a2 ? a1 : a2;
    SetResult(&result, R_NUMBER, &value);
}

static void my_max(RESULT * result, RESULT * arg1, RESULT * arg2)
{
    double a1 = R2N(arg1);
    double a2 = R2N(arg2);
    double value = a1 > a2 ? a1 : a2;
    SetResult(&result, R_NUMBER, &value);
}

static void my_floor(RESULT * result, RESULT * arg)
{
    double value = floor(R2N(arg));
    SetResult(&result, R_NUMBER, &value);
}

static void my_ceil(RESULT * result, RESULT * arg)
{
    double value = ceil(R2N(arg));
    SetResult(&result, R_NUMBER, &value);
}


int plugin_init_math(void)
{
    /* set some handy constants */
    SetVariableNumeric("Pi", M_PI);
    SetVariableNumeric("e", M_E);

    /* register some basic math functions */
    AddFunction("sqrt", 1, my_sqrt);
    AddFunction("exp", 1, my_exp);
    AddFunction("ln", 1, my_ln);
    AddFunction("log", 1, my_log);
    AddFunction("sin", 1, my_sin);
    AddFunction("cos", 1, my_cos);
    AddFunction("tan", 1, my_tan);

    /* min, max */
    AddFunction("min", 2, my_min);
    AddFunction("max", 2, my_max);

    /* floor, ceil */
    AddFunction("floor", 1, my_floor);
    AddFunction("ceil", 1, my_ceil);

    return 0;
}

void plugin_exit_math(void)
{
}