From a38b3fa383412e56eb958db998662c026bc08f4b Mon Sep 17 00:00:00 2001
From: Chris Dyer <cdyer@cs.cmu.edu>
Date: Fri, 17 Feb 2012 13:01:54 -0500
Subject: boost version checking, check for Eigen, get rid of old digamma stuff

---
 training/em_utils.h              | 24 ------------------------
 training/model1.cc               |  1 -
 training/mr_em_adapted_reduce.cc |  6 +++---
 training/ttables.h               |  4 ++--
 4 files changed, 5 insertions(+), 30 deletions(-)
 delete mode 100644 training/em_utils.h

(limited to 'training')

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
diff --git a/training/model1.cc b/training/model1.cc
index 40249aa3..a87d388f 100644
--- a/training/model1.cc
+++ b/training/model1.cc
@@ -9,7 +9,6 @@
 #include "filelib.h"
 #include "ttables.h"
 #include "tdict.h"
-#include "em_utils.h"
 
 namespace po = boost::program_options;
 using namespace std;
diff --git a/training/mr_em_adapted_reduce.cc b/training/mr_em_adapted_reduce.cc
index d4c16a2f..f65b5440 100644
--- a/training/mr_em_adapted_reduce.cc
+++ b/training/mr_em_adapted_reduce.cc
@@ -10,7 +10,7 @@
 #include "fdict.h"
 #include "weights.h"
 #include "sparse_vector.h"
-#include "em_utils.h"
+#include "m.h"
 
 using namespace std;
 namespace po = boost::program_options;
@@ -63,11 +63,11 @@ void Maximize(const bool use_vb,
   assert(tot > 0.0);
   double ltot = log(tot);
   if (use_vb)
-    ltot = digamma(tot + total_event_types * alpha);
+    ltot = Md::digamma(tot + total_event_types * alpha);
   for (SparseVector<double>::const_iterator it = counts.begin();
        it != counts.end(); ++it) {
     if (use_vb) {
-      pc->set_value(it->first, NoZero(digamma(it->second + alpha) - ltot));
+      pc->set_value(it->first, NoZero(Md::digamma(it->second + alpha) - ltot));
     } else {
       pc->set_value(it->first, NoZero(log(it->second) - ltot));
     }
diff --git a/training/ttables.h b/training/ttables.h
index 50d85a68..bf3351d2 100644
--- a/training/ttables.h
+++ b/training/ttables.h
@@ -4,9 +4,9 @@
 #include <iostream>
 #include <tr1/unordered_map>
 
+#include "m.h"
 #include "wordid.h"
 #include "tdict.h"
-#include "em_utils.h"
 
 class TTable {
  public:
@@ -39,7 +39,7 @@ class TTable {
       for (Word2Double::iterator it = cpd.begin(); it != cpd.end(); ++it)
         tot += it->second + alpha;
       for (Word2Double::iterator it = cpd.begin(); it != cpd.end(); ++it)
-        it->second = exp(digamma(it->second + alpha) - digamma(tot));
+        it->second = exp(Md::digamma(it->second + alpha) - Md::digamma(tot));
     }
     counts.clear();
   }
-- 
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