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1 #ifndef _LSONG_STATS
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2 #define _LSONG_STATS
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3
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4 #include <stdio.h>
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5 #include <math.h>
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6
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7 #ifndef M_PIl
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8 /** The constant Pi in high precision */
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9 #define M_PIl 3.1415926535897932384626433832795029L
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10 #endif
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11 #ifndef M_GAMMAl
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12 /** Euler's constant in high precision */
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13 #define M_GAMMAl 0.5772156649015328606065120900824024L
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14 #endif
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15 #ifndef M_LN2l
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16 /** the natural logarithm of 2 in high precision */
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17 #define M_LN2l 0.6931471805599453094172321214581766L
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18 #endif
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19
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20 /** The digamma function in long double precision.
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21 * @param x the real value of the argument
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22 * @return the value of the digamma (psi) function at that point
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23 * @author Richard J. Mathar
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24 * @since 2005-11-24
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25 */
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26 long double digammal(long double x) ;
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27
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28 //https://people.sc.fsu.edu/~jburkardt/cpp_src/asa121/asa121.hpp
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29 double trigamma ( double x, int *ifault );
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30
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31
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32 double LogGammaDensity( double x, double k, double theta ) ;
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33 double MixtureGammaAssignment( double x, double pi, double* k, double *theta ) ;
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34
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35
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36 // http://people.sc.fsu.edu/~jburkardt/c_src/asa091/asa091.hpp
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37 double alnorm ( double x, bool upper );
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38 double gammad ( double x, double p, int *ifault );
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39 double r8_min ( double x, double y );
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40
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41 double chicdf( double x, double df ) ;
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42
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43 #endif
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