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author | Chris Dyer <cdyer@cs.cmu.edu> | 2012-10-11 14:06:32 -0400 |
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committer | Chris Dyer <cdyer@cs.cmu.edu> | 2012-10-11 14:06:32 -0400 |
commit | 9339c80d465545aec5a6dccfef7c83ca715bf11f (patch) | |
tree | 64c56d558331edad1db3832018c80e799551c39a /gi/pyp-topics/src/log_add.h | |
parent | 438dac41810b7c69fa10203ac5130d20efa2da9f (diff) | |
parent | afd7da3b2338661657ad0c4e9eec681e014d37bf (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.h | 30 |
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 |