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Jan Trmal authored
Use the standard function for testing for infinity. Some compilers (e.g. intel C/C++ compiler) optimizes the expression x-x completely away. git-svn-id: https://svn.code.sf.net/p/kaldi/code/trunk@1391 5e6a8d80-dfce-4ca6-a32a-6e07a63d50c8
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