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QwtScaleArithmetic(3)          Qwt User's Guide          QwtScaleArithmetic(3)

NAME
       QwtScaleArithmetic -

SYNOPSIS
       #include <qwt_scale_engine.h>

   Static Public Member Functions
       static double ceil125 (double x)
       static double ceilEps (double value, double intervalSize)
       static int compareEps (double value1, double value2, double
           intervalSize)
       static double divideEps (double interval, double steps)
       static double floor125 (double x)
       static double floorEps (double value, double intervalSize)

Detailed Description
       Arithmetic including a tolerance.

Member Function Documentation
   double QwtScaleArithmetic::ceil125 (doublex) [static]
       Find the smallest value out of {1,2,5}*10^n with an integer number n
       which is greater than or equal to x

       Parameters:
           x Input value

   double QwtScaleArithmetic::ceilEps (doublevalue, doubleintervalSize)
       [static]
       Ceil a value, relative to an interval

       Parameters:
           value Value to ceil
           intervalSize Interval size

       See also:
           floorEps()

   int QwtScaleArithmetic::compareEps (doublevalue1, doublevalue2,
       doubleintervalSize) [static]
       Compare 2 values, relative to an interval. Values are 'equal', when :
       $dot value2 - value1 <= abs(intervalSize * 10e^{-6})$

       Parameters:
           value1 First value to compare
           value2 Second value to compare
           intervalSize interval size

       Returns:
           0: if equal, -1: if value2 > value1, 1: if value1 > value2

   double QwtScaleArithmetic::divideEps (doubleintervalSize, doublenumSteps)
       [static]
       Divide an interval into steps. $stepSize = (intervalSize - intervalSize
       * 10e^{-6}) / numSteps$.PP Parameters:
           intervalSize Interval size
           numSteps Number of steps

       Returns:
           Step size

   double QwtScaleArithmetic::floor125 (doublex) [static]
       Find the largest value out of {1,2,5}*10^n with an integer number n
       which is smaller than or equal to x. Parameters:
           x Input value

   double QwtScaleArithmetic::floorEps (doublevalue, doubleintervalSize)
       [static]
       Floor a value, relative to an interval

       Parameters:
           value Value to floor
           intervalSize Interval size

       See also:
           floorEps()

Author
       Generated automatically by Doxygen for Qwt User's Guide from the source
       code.

Version 5.2.3                   Tue Nov 20 2012          QwtScaleArithmetic(3)