summaryrefslogtreecommitdiff
path: root/training/em_utils.h
diff options
context:
space:
mode:
Diffstat (limited to 'training/em_utils.h')
-rw-r--r--training/em_utils.h24
1 files changed, 0 insertions, 24 deletions
diff --git a/training/em_utils.h b/training/em_utils.h
deleted file mode 100644
index 37762978..00000000
--- a/training/em_utils.h
+++ /dev/null
@@ -1,24 +0,0 @@
-#ifndef _EM_UTILS_H_
-#define _EM_UTILS_H_
-
-#include "config.h"
-#ifdef HAVE_BOOST_DIGAMMA
-#include <boost/math/special_functions/digamma.hpp>
-using boost::math::digamma;
-#else
-#warning Using Mark Johnsons digamma()
-#include <cmath>
-inline double digamma(double x) {
- double result = 0, xx, xx2, xx4;
- assert(x > 0);
- for ( ; x < 7; ++x)
- result -= 1/x;
- x -= 1.0/2.0;
- xx = 1.0/x;
- xx2 = xx*xx;
- xx4 = xx2*xx2;
- result += log(x)+(1./24.)*xx2-(7.0/960.0)*xx4+(31.0/8064.0)*xx4*xx2-(127.0/30720.0)*xx4*xx4;
- return result;
-}
-#endif
-#endif