Module NAG_FFT_INIT_TRIG in NAGC

• NAGC Information

• Components
  • Documentation from ITL
  • Example from ITL
  • Example-input from ITL
  • Example-output from ITL
  • Local-details from ITL

NAG_FFT_INIT_TRIG

 
Calculates the trigonometric coefficients required for the computation of
discrete Fourier transforms.
 
Classes  :  J1a2 . One-dimensional complex fast Fourier transforms
            A4a .  Standard precision complex arithmetic
            A7 .   Sequences (e.g., convergence acceleration)
 
Type     : C subroutine in NAGC library (C06 sublibrary).
Access   : Proprietary. Many implementations available.
Precision: Double.
Note     : This procedure may also be invoked using the name c06gzc.
 
Usage    : void nag_fft_init_trig(Integer n, double trig[], NagError *fail)
 
See also : nag_fft_multiple_real (c06fpc), nag_fft_multiple_hermitian
           (c06fqc), nag_fft_multiple_complex (c06frc),
           nag_fft_2d_complex (c06fuc), nag_fft_multiple_sine (c06hac),
           nag_fft_multiple_cosine (c06hbc), nag_fft_multiple_qtr_sine
           (c06hcc), nag_fft_multiple_qtr_cosine (c06hdc)
 
Details  : Documentation Example Example-input Example-output
           Local-details
Sites    : (1) ITL
 

Implementation of NAG_FFT_INIT_TRIG from NAGC on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double.
Note     : This procedure may also be invoked using the name c06gzc.
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : cc -I/itl/links/generic/include -o prog prog.c
                  -L/itl/links/generic/{lib lib32 lib64}{/mips3 /mips4}
                  -lnagc -lm
   Local-details: cat /itl/apps/nagclib-6/docs/implementation
   Documentation: acroread
                  /itl/apps/nagclib-6/docs/NAGdoc/cl/pdf/C06/c06gzc_cl05.pdf
   Example-input: cat
                  /itl/apps/nagclib-6/clsol06da/examples/data/c06gzce.d
   Example-outpu: cat
                  /itl/apps/nagclib-6/clsol06da/examples/results/c06gzce.r
   Example      : cat
                  /itl/apps/nagclib-6/clsol06da/examples/source/c06gzce.c