source: branches/HeuristicLab.Problems.GaussianProcessTuning/ILNumerics.2.14.4735.573/Functions/builtin/ccomplex.cs @ 10355

///
///    This file is part of ILNumerics Community Edition.
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///    ILNumerics Community Edition - high performance computing for applications.
///    Copyright (C) 2006 - 2012 Haymo Kutschbach, http://ilnumerics.net
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using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices; 
using ILNumerics.Storage;
using ILNumerics.Misc;
using ILNumerics.Native;
using ILNumerics.Exceptions;

namespace ILNumerics {

    public partial class ILMath {

        /// <summary>
        /// Create complex array from real and imaginary parts 
        /// </summary>
        /// <param name="real">Array with real part elements</param>
        /// <param name="imag">Array with imaginary part elements</param>
        /// <returns>Complex array constructed out of real and imaginary parts</returns>
        /// <exception cref="ILNumerics.Exceptions.ILArgumentException">If the size of both arguments is not the same.</exception>
        public static ILRetArray<complex> ccomplex(ILInArray<double> real, ILInArray<double> imag) {
            if (!real.Size.IsSameSize(imag.Size)) 
                throw new ILArgumentException("fcomplex: input arrays must have the same size!");
            ILRetArray<complex> ret = new ILRetArray<complex>(real.Size);
            int nelem = real.Size.NumberOfElements; 
            complex[] retArr = ret.GetArrayForWrite();
            double[] realArr = real.GetArrayForRead();
            double[] imagArr = imag.GetArrayForRead();
            for (int i = 0; i < nelem; i++) {
                retArr[i].imag = imagArr[i]; 
                retArr[i].real = realArr[i]; 
            }
            return ret; 
        }
        /// <summary>
        /// Create complex array from real and imaginary parts
        /// </summary>
        /// <param name="real">Array with real part elements</param>
        /// <param name="imag">Array with imaginary part elements</param>
        /// <returns>Complex array constructed out of real and imaginary parts</returns>
        /// <exception cref="ILNumerics.Exceptions.ILArgumentException">If the size of both arguments is not the same.</exception>
        public static ILRetArray<fcomplex> ccomplex(ILInArray<float> real, ILInArray<float> imag) {
            if (!real.Size.IsSameSize(imag.Size)) 
                throw new ILArgumentException("fcomplex: input arrays must have the same size!");
            ILRetArray<fcomplex> ret = new ILRetArray<fcomplex>(real.Size);
            int nelem = real.Size.NumberOfElements; 
            fcomplex[] retArr = ret.GetArrayForWrite();
            float[] realArr = real.GetArrayForRead();
            float[] imagArr = imag.GetArrayForRead();
            for (int i = 0; i < nelem; i++) {
                retArr[i].imag = imagArr[i]; 
                retArr[i].real = realArr[i]; 
            }
            return ret; 
        }

    }
}