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- atan2(...)
atan2(y, x)
Return the arc tangent (measured in radians) of y/x.
Unlike atan(y/x), the signs of both x and y are considered.
- cos(...)
cos(x)
Return the cosine of x (measured in radians).
- cross(...)
- distortion(atoms)
calculate (in-plane) ring distortion coordinates. Returns
amplitude, phase as a tuple.
- dot(...)
- pucker(atoms)
calculate ring pucker coordinates. Returns amplitude, phase as
a tuple
from C. Altona and M. Sundaralingam, JACS 94, 8205 (1972).
- sin(...)
sin(x)
Return the sine of x (measured in radians).
- sqrt(...)
sqrt(x)
Return the square root of x.
- unitVec(...)
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