13 #include "qwt_global.h"
23 #define _USE_MATH_DEFINES 1
28 #include "qwt_global.h"
31 #define LOG10_2 0.30102999566398119802
35 #define LOG10_3 0.47712125471966243540
39 #define LOG10_5 0.69897000433601885749
43 #define M_2PI 6.28318530717958623200
48 #define LOG_MIN 1.0e-100
53 #define LOG_MAX 1.0e100
57 #define M_E 2.7182818284590452354
61 #define M_LOG2E 1.4426950408889634074
65 #define M_LOG10E 0.43429448190325182765
69 #define M_LN2 0.69314718055994530942
73 #define M_LN10 2.30258509299404568402
77 #define M_PI 3.14159265358979323846
81 #define M_PI_2 1.57079632679489661923
85 #define M_PI_4 0.78539816339744830962
89 #define M_1_PI 0.31830988618379067154
93 #define M_2_PI 0.63661977236758134308
97 #define M_2_SQRTPI 1.12837916709551257390
101 #define M_SQRT2 1.41421356237309504880
105 #define M_SQRT1_2 0.70710678118654752440
108 QWT_EXPORT
double qwtGetMin(
const double *array,
int size );
109 QWT_EXPORT
double qwtGetMax(
const double *array,
int size );
123 inline int qwtFuzzyCompare(
double value1,
double value2,
double intervalSize )
125 const double eps = qAbs( 1.0e-6 * intervalSize );
127 if ( value2 - value1 > eps )
130 if ( value1 - value2 > eps )
137 inline bool qwtFuzzyGreaterOrEqual(
double d1,
double d2 )
139 return ( d1 >= d2 ) || qFuzzyCompare( d1, d2 );
142 inline bool qwtFuzzyLessOrEqual(
double d1,
double d2 )
144 return ( d1 <= d2 ) || qFuzzyCompare( d1, d2 );
148 inline int qwtSign(
double x )
159 inline double qwtSqr(
double x )
165 inline double qwtRoundF(
double d)
167 return ::floor( d + 0.5 );
171 inline double qwtFloorF(
double d)
177 inline double qwtCeilF(
double d)