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476 lines
11 KiB
476 lines
11 KiB
//=============================================================================
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//
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// File : libkvimath.cpp
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// Creation date : Sat Jan 13 14:00:12 2006 GMT by Szymon Stefanek
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//
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// This math is part of the KVirc irc client distribution
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// Copyright (C) 2006 Szymon Stefanek (pragma at kvirc dot net)
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//
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// This program is FREE software. You can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your opinion) 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.
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// See the 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
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// along with this program. If not, write to the Free Software Foundation,
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// Inc. ,51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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//=============================================================================
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#include "kvi_settings.h"
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#include "kvi_module.h"
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#include "kvi_string.h"
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#include <math.h>
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// Workaround for lost isnan and isinf definitions after
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// inclusion of iostream.h on some MacOS X systems
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#ifdef Q_OS_MACX
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#ifndef isnan
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extern "C" int isnan (double);
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#endif
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#ifndef isinf
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extern "C" int isinf (double);
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#endif
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#endif
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#define MATH_KVS_1PARAM_FUNCTION(__fncname,__paramname,__mathcallname) \
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static bool __fncname(KviKvsModuleFunctionCall * c) \
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{ \
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kvs_real_t dReal; \
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KVSM_PARAMETERS_BEGIN(c) \
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KVSM_PARAMETER(__paramname,KVS_PT_REAL,0,dReal) \
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KVSM_PARAMETERS_END(c) \
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c->returnValue()->setReal(__mathcallname(dReal)); \
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return true; \
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}
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#ifdef COMPILE_ON_WINDOWS
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// dobbiamo testare meglio, i risultati.
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static double cbrt(double x)
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{
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if (x > 0.0) return pow(x, 1.0/3.0);
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else return -pow(-x, 1.0/3.0);
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}
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static int isinf (double d) {
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int expon = 0;
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double val = frexp (d, &expon);
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if (expon == 1025) {
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if (val == 0.5) return 1;
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else if (val == -0.5) return -1;
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else return 0;
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} else {
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return 0;
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}
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}
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static int isnan (double d) {
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int expon = 0;
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double val = frexp (d, &expon);
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if (expon == 1025) {
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if (val == 0.5) return 0;
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else if (val == -0.5) return 0;
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else return 1;
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} else {
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return 0;
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}
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}
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#endif
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/*
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@doc: math.sin
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@type:
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function
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@title:
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$math.sin
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@short:
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Returns the sinus of the specified angle in radiants
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@syntax:
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<real> $math.sin(<angle:real>)
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@description:
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Returns the sinus of the specified angle in radiants
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_sin,"angle",sin)
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/*
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@doc: math.cos
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@type:
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function
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@title:
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$math.cos
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@short:
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Returns the cosinus of the specified angle in radiants
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@syntax:
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<real> $math.cos(<angle:real>)
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@description:
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Returns the cosinus of the specified angle in radiants
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_cos,"angle",cos)
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/*
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@doc: math.tan
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@type:
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function
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@title:
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$math.tan
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@short:
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Returns the tangent of the specified angle in radiants
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@syntax:
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<real> $math.tan(<angle:real>)
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@description:
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Returns the tangent of the specified angle in radiants
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_tan,"angle",tan)
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/*
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@doc: math.asin
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@type:
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function
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@title:
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$math.asin
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@short:
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Returns the angle in radiants that has the specified sinus value.
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@syntax:
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<real> $math.asin(<sinus:real>)
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@description:
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Returns the angle in radiants that has the specified sinus value.
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_asin,"sinus",asin)
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/*
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@doc: math.acos
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@type:
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function
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@title:
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$math.acos
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@short:
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Returns the angle in radiants that has the specified cosinus value.
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@syntax:
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<real> $math.acos(<cosinus:real>)
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@description:
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Returns the angle in radiants that has the specified cosinus value.
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_acos,"cosinus",acos)
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/*
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@doc: math.atan
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@type:
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function
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@title:
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$math.atan
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@short:
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Returns the angle in radiants that has the specified tangent value.
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@syntax:
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<real> $math.atan(<tangent:real>)
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@description:
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Returns the angle in radiants that has the specified tangent value.
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_atan,"tangent",atan)
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/*
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@doc: math.sqrt
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@type:
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function
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@title:
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$math.sqrt
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@short:
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Returns the square root of a number
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@syntax:
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<real> $math.sqrt(<number:real>)
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@description:
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Returns the square root of the specified number
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_sqrt,"number",sqrt)
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/*
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@doc: math.cbrt
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@type:
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function
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@title:
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$math.cbrt
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@short:
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Returns the cube root of a number
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@syntax:
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<real> $math.cbrt(<number:real>)
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@description:
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Returns the cube root of the specified number
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_cbrt,"number",cbrt)
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/*
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@doc: math.abs
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@type:
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function
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@title:
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$math.abs
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@short:
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Returns the absolute value of a number
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@syntax:
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<real> $math.abs(<number:real>)
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@description:
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Returns the absolute value of the specified number
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_abs,"number",fabs)
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/*
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@doc: math.floor
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@type:
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function
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@title:
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$math.floor
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@short:
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Rounds down to the nearest integer
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@syntax:
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<real> $math.floor(<number:real>)
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@description:
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Rounds down number to the nearest integer
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_floor,"number",floor)
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/*
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@doc: math.ceil
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@type:
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function
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@title:
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$math.ceil
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@short:
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Rounds up to the nearest integer
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@syntax:
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<real> $math.ceil(<number:real>)
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@description:
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Rounds up number to the nearest integer
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_ceil,"number",ceil)
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/*
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@doc: math.exp
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@type:
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function
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@title:
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$math.exp
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@short:
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Returns the exponential of the specified number
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@syntax:
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<real> $math.exp(<number:real>)
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@description:
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Returns the exponential of the specified number
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_exp,"number",exp)
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/*
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@doc: math.log
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@type:
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function
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@title:
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$math.log
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@short:
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Returns the natural logarithm of the specified number
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@syntax:
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<real> $math.log(<number:real>)
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@description:
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Returns the natural (base e) logarithm of the specified number
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_log,"number",log)
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/*
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@doc: math.log10
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@type:
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function
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@title:
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$math.log10
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@short:
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Returns the base 10 logarithm of the specified number
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@syntax:
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<real> $math.log10(<number:real>)
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@description:
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Returns the base 10 logarithm of the specified number
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*/
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MATH_KVS_1PARAM_FUNCTION(math_kvs_fnc_log10,"number",log10)
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/*
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@doc: math.isnan
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@type:
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function
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@title:
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$math.isnan
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@short:
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Checks if the value is not a number
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@syntax:
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<boolean> $math.isnan(<value:real>)
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@description:
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Checks if the specified value is a valid number
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or NaN (Not a Number). NaN is returned by several
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math functions when the result would be undefined.
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*/
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static bool math_kvs_fnc_isnan(KviKvsModuleFunctionCall * c)
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{
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kvs_real_t dReal;
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KVSM_PARAMETERS_BEGIN(c)
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KVSM_PARAMETER("value",KVS_PT_REAL,0,dReal)
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KVSM_PARAMETERS_END(c)
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c->returnValue()->setBoolean(isnan(dReal));
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return true;
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}
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/*
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@doc: math.isinf
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@type:
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function
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@title:
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$math.isinf
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@short:
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Checks if the value is the infinity
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@syntax:
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<boolean> $math.isinf(<value:real>)
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@description:
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Checks if the specified value is the infinity.
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*/
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#ifdef COMPILE_ON_WINDOWS
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static bool math_kvs_fnc_isinf(KviKvsModuleFunctionCall * c)
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{
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kvs_real_t dReal;
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KVSM_PARAMETERS_BEGIN(c)
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KVSM_PARAMETER("value",KVS_PT_REAL,0,dReal)
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KVSM_PARAMETERS_END(c)
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c->returnValue()->setBoolean(sinf(dReal));
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return true;
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}
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#else
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static bool math_kvs_fnc_isinf(KviKvsModuleFunctionCall * c)
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{
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kvs_real_t dReal;
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KVSM_PARAMETERS_BEGIN(c)
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KVSM_PARAMETER("value",KVS_PT_REAL,0,dReal)
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KVSM_PARAMETERS_END(c)
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c->returnValue()->setBoolean(isinf(dReal));
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return true;
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}
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#endif //COMPILE_ON_WINDOWS
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/*
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@doc: math.pow
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@type:
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function
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@title:
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$math.pow
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@short:
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Returns a to the power of b
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@syntax:
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<real> $math.pow(<a:real>,<b:real>)
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@description:
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Returns a to the power of b
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*/
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static bool math_kvs_fnc_pow(KviKvsModuleFunctionCall * c)
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{
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kvs_real_t dA,dB;
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KVSM_PARAMETERS_BEGIN(c)
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KVSM_PARAMETER("a",KVS_PT_REAL,0,dA)
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KVSM_PARAMETER("b",KVS_PT_REAL,0,dB)
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KVSM_PARAMETERS_END(c)
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c->returnValue()->setReal(pow(dA,dB));
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return true;
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}
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/*
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@doc: math.pi
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@type:
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function
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@title:
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$math.pi
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@short:
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Returns the value of pi
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@syntax:
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<real> $math.pi()
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@description:
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Returns the value of pi
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*/
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#ifdef COMPILE_ON_WINDOWS
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static bool math_kvs_fnc_pi(KviKvsModuleFunctionCall * c)
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{
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c->returnValue()->setReal(3.141592653589793238462643383279502884197169399375);
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return true;
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}
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#else
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static bool math_kvs_fnc_pi(KviKvsModuleFunctionCall * c)
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{
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c->returnValue()->setReal(M_PI);
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return true;
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}
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#endif
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/*
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@doc: math.e
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@type:
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function
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@title:
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$math.e
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@short:
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Returns the value of e
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@syntax:
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<real> $math.e()
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@description:
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Returns the value of the euler constant e
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*/
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#ifdef COMPILE_ON_WINDOWS
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static bool math_kvs_fnc_e(KviKvsModuleFunctionCall * c)
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{
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c->returnValue()->setReal(1.56903485);
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return true;
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}
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#else
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static bool math_kvs_fnc_e(KviKvsModuleFunctionCall * c)
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{
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c->returnValue()->setReal(M_E);
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return true;
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}
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#endif
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static bool math_module_init(KviModule * m)
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{
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KVSM_REGISTER_FUNCTION(m,"sin",math_kvs_fnc_sin);
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KVSM_REGISTER_FUNCTION(m,"cos",math_kvs_fnc_cos);
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KVSM_REGISTER_FUNCTION(m,"tan",math_kvs_fnc_tan);
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KVSM_REGISTER_FUNCTION(m,"asin",math_kvs_fnc_asin);
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KVSM_REGISTER_FUNCTION(m,"acos",math_kvs_fnc_acos);
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KVSM_REGISTER_FUNCTION(m,"atan",math_kvs_fnc_atan);
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KVSM_REGISTER_FUNCTION(m,"sqrt",math_kvs_fnc_sqrt);
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KVSM_REGISTER_FUNCTION(m,"cbrt",math_kvs_fnc_cbrt);
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KVSM_REGISTER_FUNCTION(m,"abs",math_kvs_fnc_abs);
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KVSM_REGISTER_FUNCTION(m,"floor",math_kvs_fnc_floor);
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KVSM_REGISTER_FUNCTION(m,"ceil",math_kvs_fnc_ceil);
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KVSM_REGISTER_FUNCTION(m,"pow",math_kvs_fnc_pow);
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KVSM_REGISTER_FUNCTION(m,"exp",math_kvs_fnc_exp);
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KVSM_REGISTER_FUNCTION(m,"log",math_kvs_fnc_log);
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KVSM_REGISTER_FUNCTION(m,"log10",math_kvs_fnc_log10);
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KVSM_REGISTER_FUNCTION(m,"pi",math_kvs_fnc_pi);
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KVSM_REGISTER_FUNCTION(m,"e",math_kvs_fnc_e);
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KVSM_REGISTER_FUNCTION(m,"isnan",math_kvs_fnc_isnan);
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KVSM_REGISTER_FUNCTION(m,"isinf",math_kvs_fnc_isinf);
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return true;
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}
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static bool math_module_cleanup(KviModule *m)
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{
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return true;
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}
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KVIRC_MODULE(
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"Math", // module name
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"1.0.0", // module version
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"Copyright (C) 2006 Szymon Stefanek (pragma at kvirc dot net),"\
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"Tonino Imbesi (grifisx at barmes dot org)," \
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"Alessandro Carbone (noldor at barmes dot org)",
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"Mathematical function module",
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math_module_init,
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0,
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0,
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math_module_cleanup
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)
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