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/*
* Copyright (c) 2009 Samit Basu
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "Operators.hpp"
#include "Array.hpp"
#include <cmath>
struct OpConj {
static inline float func(float t) { return t; }
static inline double func(double t) {return t; }
static inline void func(float x, float y, float &rx, float &ry) {
rx = x; ry = -y;
}
static inline void func(double x, double y, double &rx, double &ry) {
rx = x; ry = -y;
}
};
//!
//@Module CONJ Conjugate Function
//@@Section ELEMENTARY
//@@Usage
//Returns the complex conjugate of the input array for all elements. The
//general syntax for its use is
//@[
// y = conj(x)
//@]
//where @|x| is an @|n|-dimensional array of numerical type. The output
//is the same numerical type as the input. The @|conj| function does
//nothing to real and integer types.
//@@Example
//The following demonstrates the complex conjugate applied to a complex scalar.
//@<
//conj(3+4*i)
//@>
//The @|conj| function has no effect on real arguments:
//@<
//conj([2,3,4])
//@>
//For a double-precision complex array,
//@<
//conj([2.0+3.0*i,i])
//@>
//@@Tests
//@$exact#y1=conj(x1)
//@@Signature
//function conj ConjFunction
//inputs x
//outputs y
//!
ArrayVector ConjFunction(int nargout, const ArrayVector& arg) {
if (arg.size() != 1)
throw Exception("conj function requires 1 argument");
return ArrayVector(UnaryOp<OpConj>(arg[0]));
}
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