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authorChris Dyer <cdyer@cs.cmu.edu>2012-10-11 14:06:32 -0400
committerChris Dyer <cdyer@cs.cmu.edu>2012-10-11 14:06:32 -0400
commit9339c80d465545aec5a6dccfef7c83ca715bf11f (patch)
tree64c56d558331edad1db3832018c80e799551c39a /gi/pyp-topics/src/log_add.h
parent438dac41810b7c69fa10203ac5130d20efa2da9f (diff)
parentafd7da3b2338661657ad0c4e9eec681e014d37bf (diff)
Merge branch 'master' of https://github.com/redpony/cdec
Diffstat (limited to 'gi/pyp-topics/src/log_add.h')
-rw-r--r--gi/pyp-topics/src/log_add.h30
1 files changed, 0 insertions, 30 deletions
diff --git a/gi/pyp-topics/src/log_add.h b/gi/pyp-topics/src/log_add.h
deleted file mode 100644
index e0620c5a..00000000
--- a/gi/pyp-topics/src/log_add.h
+++ /dev/null
@@ -1,30 +0,0 @@
-#ifndef log_add_hh
-#define log_add_hh
-
-#include <limits>
-#include <iostream>
-#include <cassert>
-#include <cmath>
-
-template <typename T>
-struct Log
-{
- static T zero() { return -std::numeric_limits<T>::infinity(); }
-
- static T add(T l1, T l2)
- {
- if (l1 == zero()) return l2;
- if (l1 > l2)
- return l1 + std::log(1 + exp(l2 - l1));
- else
- return l2 + std::log(1 + exp(l1 - l2));
- }
-
- static T subtract(T l1, T l2)
- {
- //std::assert(l1 >= l2);
- return l1 + log(1 - exp(l2 - l1));
- }
-};
-
-#endif