NAME

       PDL::GSLSF::TRIG - PDL interface to GSL Special Functions

DESCRIPTION

       This is an interface to the Special Function package present in the GNU Scientific
       Library.

SYNOPSIS

FUNCTIONS

   gsl_sf_sin
         Signature: (double x(); double [o]y(); double [o]e())

       Sin(x) with GSL semantics.

       gsl_sf_sin does not process bad values.  It will set the bad-value flag of all output
       piddles if the flag is set for any of the input piddles.

   gsl_sf_cos
         Signature: (double x(); double [o]y(); double [o]e())

       Cos(x) with GSL semantics.

       gsl_sf_cos does not process bad values.  It will set the bad-value flag of all output
       piddles if the flag is set for any of the input piddles.

   gsl_sf_hypot
         Signature: (double x(); double xx(); double [o]y(); double [o]e())

       Hypot(x,xx) with GSL semantics.

       gsl_sf_hypot does not process bad values.  It will set the bad-value flag of all output
       piddles if the flag is set for any of the input piddles.

   gsl_sf_complex_sin
         Signature: (double zr(); double zi(); double [o]x(); double [o]y(); double [o]xe(); double [o]ye())

       Sin(z) for complex z

       gsl_sf_complex_sin does not process bad values.  It will set the bad-value flag of all
       output piddles if the flag is set for any of the input piddles.

   gsl_sf_complex_cos
         Signature: (double zr(); double zi(); double [o]x(); double [o]y(); double [o]xe(); double [o]ye())

       Cos(z) for complex z

       gsl_sf_complex_cos does not process bad values.  It will set the bad-value flag of all
       output piddles if the flag is set for any of the input piddles.

   gsl_sf_complex_logsin
         Signature: (double zr(); double zi(); double [o]x(); double [o]y(); double [o]xe(); double [o]ye())

       Log(Sin(z)) for complex z

       gsl_sf_complex_logsin does not process bad values.  It will set the bad-value flag of all
       output piddles if the flag is set for any of the input piddles.

   gsl_sf_lnsinh
         Signature: (double x(); double [o]y(); double [o]e())

       Log(Sinh(x)) with GSL semantics.

       gsl_sf_lnsinh does not process bad values.  It will set the bad-value flag of all output
       piddles if the flag is set for any of the input piddles.

   gsl_sf_lncosh
         Signature: (double x(); double [o]y(); double [o]e())

       Log(Cos(x)) with GSL semantics.

       gsl_sf_lncosh does not process bad values.  It will set the bad-value flag of all output
       piddles if the flag is set for any of the input piddles.

   gsl_sf_polar_to_rect
         Signature: (double r(); double t(); double [o]x(); double [o]y(); double [o]xe(); double [o]ye())

       Convert polar to rectlinear coordinates.

       gsl_sf_polar_to_rect does not process bad values.  It will set the bad-value flag of all
       output piddles if the flag is set for any of the input piddles.

   gsl_sf_rect_to_polar
         Signature: (double x(); double y(); double [o]r(); double [o]t(); double [o]re(); double [o]te())

       Convert rectlinear to polar coordinates. return argument in range [-pi, pi].

       gsl_sf_rect_to_polar does not process bad values.  It will set the bad-value flag of all
       output piddles if the flag is set for any of the input piddles.

   gsl_sf_angle_restrict_symm
         Signature: (double [o]y())

       Force an angle to lie in the range (-pi,pi].

       gsl_sf_angle_restrict_symm does not process bad values.  It will set the bad-value flag of
       all output piddles if the flag is set for any of the input piddles.

   gsl_sf_angle_restrict_pos
         Signature: (double [o]y())

       Force an angle to lie in the range [0,2 pi).

       gsl_sf_angle_restrict_pos does not process bad values.  It will set the bad-value flag of
       all output piddles if the flag is set for any of the input piddles.

   gsl_sf_sin_err
         Signature: (double x(); double dx(); double [o]y(); double [o]e())

       Sin(x) for quantity with an associated error.

       gsl_sf_sin_err does not process bad values.  It will set the bad-value flag of all output
       piddles if the flag is set for any of the input piddles.

   gsl_sf_cos_err
         Signature: (double x(); double dx(); double [o]y(); double [o]e())

       Cos(x) for quantity with an associated error.

       gsl_sf_cos_err does not process bad values.  It will set the bad-value flag of all output
       piddles if the flag is set for any of the input piddles.

AUTHOR

       This file copyright (C) 1999 Christian Pellegrin <chri@infis.univ.trieste.it> All rights
       reserved. There is no warranty. You are allowed to redistribute this software /
       documentation under certain conditions. For details, see the file COPYING in the PDL
       distribution. If this file is separated from the PDL distribution, the copyright notice
       should be included in the file.

       The GSL SF modules were written by G. Jungman.