diff options
Diffstat (limited to 'externals/grill/vasp/source/util.cpp')
| -rw-r--r-- | externals/grill/vasp/source/util.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/externals/grill/vasp/source/util.cpp b/externals/grill/vasp/source/util.cpp new file mode 100644 index 00000000..c487e3d1 --- /dev/null +++ b/externals/grill/vasp/source/util.cpp @@ -0,0 +1,12 @@ +#include "util.h" +#include <math.h> + +R arg(R re,R im) +{ + if(re) + return fmod(atan(im/re)+(re < 0?2*PI:PI),2*PI)-PI; + else + if(im || re) return im > 0?PI/2:-PI/2; + else return 0; +} + |