#include <math.h>
#include <qpoint.h>
#include "qwt_global.h"
Go to the source code of this file.
Defines | |
| #define | LOG10_2 0.30102999566398119802 |
| #define | LOG10_3 0.47712125471966243540 |
| #define | LOG10_5 0.69897000433601885749 |
| #define | M_2PI 6.28318530717958623200 |
| #define | LOG_MIN 1.0e-100 |
| #define | LOG_MAX 1.0e100 |
| #define | M_E 2.7182818284590452354 |
| #define | M_LOG2E 1.4426950408889634074 |
| #define | M_LN2 0.69314718055994530942 |
| #define | M_LN10 2.30258509299404568402 |
| #define | M_PI 3.14159265358979323846 |
| #define | M_PI_2 1.57079632679489661923 |
| #define | M_PI_4 0.78539816339744830962 |
| #define | M_1_PI 0.31830988618379067154 |
| #define | M_2_PI 0.63661977236758134308 |
| #define | M_2_SQRTPI 1.12837916709551257390 |
| #define | M_SQRT2 1.41421356237309504880 |
| #define | M_SQRT1_2 0.70710678118654752440 |
| #define | qwtMax QMAX |
| #define | qwtMin QMIN |
| #define | qwtAbs QABS |
| #define | qwtInt qRound |
Functions | |
| QWT_EXPORT double | qwtCeil125 (double x) |
| QWT_EXPORT double | qwtFloor125 (double x) |
| QWT_EXPORT double | qwtGetMin (double *array, int size) |
| QWT_EXPORT double | qwtGetMax (double *array, int size) |
| QWT_EXPORT void | qwtTwistArray (double *array, int size) |
| QWT_EXPORT int | qwtChkMono (double *array, int size) |
| QWT_EXPORT void | qwtLinSpace (double *array, int size, double xmin, double xmax) |
| QWT_EXPORT void | qwtLogSpace (double *array, int size, double xmin, double xmax) |
| template<class T> int | qwtSign (const T &x) |
| template<class T> T | qwtSqr (const T &x) |
| template<class T> void | qwtCopyArray (T *dest, T *src, int n) |
| template<class T> void | qwtShiftArray (T *arr, int size, int di) |
| template<class T> void | qwtSwap (T &x1, T &x2) |
| template<class T> void | qwtSort (const T &x1, const T &x2, T &xmin, T &xmax) |
| template<class T> void | qwtSort (T &x1, T &x2) |
| template<class T> T | qwtLim (const T &x, const T &x1, const T &x2) |
| QPoint | qwtPolar2Pos (const QPoint ¢er, double radius, double angle) |
| QPoint | qwtDegree2Pos (const QPoint ¢er, double radius, double angle) |
Definition in file qwt_math.h.
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Definition at line 24 of file qwt_math.h. Referenced by QwtAutoScale::buildLogScale(). |
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Definition at line 28 of file qwt_math.h. Referenced by QwtAutoScale::buildLogScale(). |
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Definition at line 32 of file qwt_math.h. Referenced by QwtAutoScale::buildLogScale(). |
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Definition at line 44 of file qwt_math.h. Referenced by QwtScaleDiv::buildLogDiv(), QwtAutoScale::setRange(), and QwtAutoScale::setReference(). |
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Definition at line 40 of file qwt_math.h. Referenced by QwtScaleDiv::buildLogDiv(), QwtAutoScale::setRange(), and QwtAutoScale::setReference(). |
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Definition at line 80 of file qwt_math.h. |
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Definition at line 84 of file qwt_math.h. |
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Definition at line 88 of file qwt_math.h. |
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Definition at line 36 of file qwt_math.h. |
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Definition at line 48 of file qwt_math.h. |
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Definition at line 64 of file qwt_math.h. |
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Definition at line 60 of file qwt_math.h. |
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Definition at line 52 of file qwt_math.h. |
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Definition at line 68 of file qwt_math.h. Referenced by QwtKnob::drawMarker(), QwtCompassNeedle3::drawNeedle(), QwtSimpleCompassRose::drawRose(), QwtScaleDraw::drawTick(), QwtWheel::drawWheel(), QwtKnob::getScrollMode(), QwtKnob::getValue(), QwtScaleDraw::labelPlacement(), line2Radians(), QwtScaleDraw::minLabelDist(), and qwtDegree2Pos(). |
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Definition at line 72 of file qwt_math.h. Referenced by QwtCompassNeedle3::drawNeedle(), QwtSimpleCompassRose::drawRose(), and line2Radians(). |
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Definition at line 76 of file qwt_math.h. |
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Definition at line 96 of file qwt_math.h. |
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Definition at line 92 of file qwt_math.h. |
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Definition at line 112 of file qwt_math.h. Referenced by cutPoint(), QwtScaleDraw::drawTick(), QwtPainter::invScale(), QwtScaleDraw::labelPlacement(), QwtPlot::print(), and QwtPainter::scale(). |
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Find the smallest value out of {1,2,5}*10^n with an integer number n which is greater than or equal to x.
Definition at line 56 of file qwt_math.cpp. Referenced by QwtScaleDiv::buildLinDiv(), QwtAutoScale::buildLinScale(), and QwtScaleDiv::buildLogDiv(). |
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Checks if an array is a strictly monotonic sequence.
Definition at line 119 of file qwt_math.cpp. References qwtSign(). Referenced by QwtCurve::drawSpline(). |
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Copy an array into another.
Definition at line 140 of file qwt_math.h. Referenced by qwtShiftArray(). |
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Definition at line 270 of file qwt_math.h. References M_PI, and qwtPolar2Pos(). Referenced by QwtCompassLineNeedle::drawNeedle(), QwtCompassNeedle2::drawNeedle(), QwtCompassNeedle1::drawNeedle(), QwtCompassMagnetNeedle::drawNeedle(), and QwtCompassNeedle4::drawPointer(). |
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Find the largest value out of {1,2,5}*10^n with an integer number n which is smaller than or equal to x.
Definition at line 85 of file qwt_math.cpp. |
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Find the largest value in an array.
Definition at line 37 of file qwt_math.cpp. References qwtMax. Referenced by QwtCurve::drawSpline(). |
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Find the smallest value in an array.
Definition at line 19 of file qwt_math.cpp. References qwtMin. Referenced by QwtCurve::drawSpline(). |
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Limit a value to fit into a specified interval.
Definition at line 243 of file qwt_math.h. References qwtMax, and qwtMin. Referenced by QwtArrowButton::QwtArrowButton(), QwtScaleDraw::setAngleRange(), QwtDblRange::setRange(), QwtWheel::setTickCnt(), QwtWheel::setTotalAngle(), QwtWheel::setViewAngle(), and QwtCurve::verifyRange(). |
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Create an array of equally spaced values.
Definition at line 161 of file qwt_math.cpp. Referenced by QwtScaleDiv::buildLinDiv(). |
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Create an array of logarithmically equally spaced values.
Definition at line 189 of file qwt_math.cpp. Referenced by QwtScaleDiv::buildLogDiv(). |
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Definition at line 261 of file qwt_math.h. Referenced by QwtCompassNeedle3::drawNeedle(), QwtSimpleCompassRose::drawRose(), and qwtDegree2Pos(). |
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Shift an array by a specified number of positions.
Definition at line 155 of file qwt_math.h. References qwtAbs, and qwtCopyArray(). |
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Return the sign.
Definition at line 116 of file qwt_math.h. Referenced by qwtChkMono(). |
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Sort two values in ascending order.
Definition at line 224 of file qwt_math.h. Referenced by QwtCurve::verifyRange(). |
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Sort two values in ascending order.
Definition at line 205 of file qwt_math.h. |
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Return the square of a number.
Definition at line 128 of file qwt_math.h. Referenced by QwtSpline::buildPerSpline(), QwtPlot::closestCurve(), QwtPlot::closestMarker(), and QwtCurve::drawSpline(). |
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Swap two values.
Definition at line 188 of file qwt_math.h. |
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Invert the order of array elements.
Definition at line 141 of file qwt_math.cpp. Referenced by QwtCurve::drawSpline(), and QwtScaleDiv::rebuild(). |
1.3.2