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Restriction Functions

Function: double gsl_sf_angle_restrict_symm (double theta)
Function: int gsl_sf_angle_restrict_symm_e (double * theta)
These routines force the angle theta to lie in the range @math{(-\pi,\pi]}.

Function: double gsl_sf_angle_restrict_pos (double theta)
Function: int gsl_sf_angle_restrict_pos_e (double * theta)
These routines force the angle theta to lie in the range @math{[0, 2\pi)}.


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