Psi4
src/psi4/optking/physconst.h
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1 /*
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3  *
4  * Psi4: an open-source quantum chemistry software package
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28 
34 #ifndef _opt_physconst_h_
35 #define _opt_physconst_h_
36 
37 #define _pi 3.14159265358979323846264338327950288
38 #define _bohr2angstroms 0.52917720859
39 #define _hartree2aJ 4.35974381
40 
41 
42 #endif