attenuators.cpp File Reference

#include <wx/wx.h>
#include <dialog_helpers.h>
#include "pcb_calculator_frame.h"

Go to the source code of this file.

Functions
double	DoubleFromString (const wxString &TextValue)

Function Documentation

DoubleFromString()

double DoubleFromString

(

const wxString &

TextValue

)

Definition at line 36 of file params_read_write.cpp.

{
    double value = 0;

    /* Acquire the 'right' decimal point separator */
    const struct lconv* lc            = localeconv();
    wxChar              decimal_point = lc->decimal_point[0];
    wxString            buf( TextValue.Strip( wxString::both ) );

    /* Convert the period in decimal point */
    buf.Replace( wxT( "." ), wxString( decimal_point, 1 ) );
    // An ugly fix needed by WxWidgets 2.9.1 that sometimes
    // back to a point as separator, although the separator is the comma
    buf.Replace( wxT( "," ), wxString( decimal_point, 1 ) );

    /* Find the end of the numeric part
     *(when units are append to the number, remove them)
    */
    unsigned brk_point = 0;
    while( brk_point < buf.Len() )
    {
        wxChar ch = buf[brk_point];
        if( !( ( ch >= '0' && ch <= '9' ) || ( ch == decimal_point ) || ( ch == '-' )
                    || ( ch == '+' ) || ( ch == 'e' ) || ( ch == 'E' ) ) )
        {
            break;
        }
        ++brk_point;
    }

    // Check for strings that cannot qualify as a number
    if( brk_point == 0 )
    {
        return std::nan( "" );
    }

    /* Extract the numeric part */
    if( !buf.Left( brk_point ).ToDouble( &value ) )
    {
        return std::nan( "" );
    }
    return value;
}

Referenced by PCB_CALCULATOR_FRAME::OnCalculateESeries(), PCB_CALCULATOR_FRAME::OnTWCalculateFromCurrent(), PCB_CALCULATOR_FRAME::OnTWCalculateFromExtWidth(), PCB_CALCULATOR_FRAME::OnTWCalculateFromIntWidth(), PCB_CALCULATOR_FRAME::TransfPanelDataToAttenuator(), and PCB_CALCULATOR_FRAME::TWDisplayValues().