sin(3M)

NAME
     SIN, DSIN, CSIN, CDSIN - Computes the sine

SYNOPSIS
     UNICOS and UNICOS/mk systems:

     SIN ([X=]x)
     DSIN ([X=]x)
     CSIN ([X=]x)

     UNICOS and IRIX systems:
     CDSIN ([X=]x)

IMPLEMENTATION
     UNICOS, UNICOS/mk, and IRIX systems

STANDARDS
     Fortran 90
     CDSIN is a compiler extension to Fortran 90.

DESCRIPTION
     CDSIN is the generic function name.  These functions are CF90
     elemental functions.

     A vector version of this intrinsic exists on UNICOS and UNICOS/mk
     systems.  On UNICOS/mk systems, the vector version of this intrinsic
     is used when -h vector3 (C compiler) or -O vector3 or -O3 (Fortran
     compiler) has been specified on the compiler command line.

     The entry point CDSIN is provided for support in other languages.  It
     is not recognized as an intrinsic function; therefore, you must use
     the CDIR$ VFUNCTION directive to allow vectorization.

     These functions evaluate y = sin(x).

   CF90
     CDSIN is called implicitly by the Fortran 90 compiler as a result of a
     generic SIN call with a complex double-precision argument.

   CAL Register Usage (Cray Research Systems Only)
     Scalar SIN:  SIN% (call-by-register)
          on entry   (S1) = argument
          on exit    (S1) = result

     Vector SIN:  %SIN% (call-by-register)
          on entry   (V1) = argument vector
          on exit    (V1) = result vector

     Scalar DSIN:  DSIN% (call-by-register)
          on entry   (S1) and (S2) = argument
          on exit    (S1) and (S2) = result

     Vector DSIN:  %DSIN% (call-by-register)
          on entry   (V1) and (V2) = argument vector
          on exit    (V1) and (V2) = result vector

     Scalar CSIN:  CSIN% (call-by-register)
          on entry   (S1) and (S2) = argument
          on exit    (S1) and (S2) = result

     Vector CSIN:  %CSIN% (call-by-register)
          on entry   (V1) and (V2) = argument vector
          on exit    (V1) and (V2) = result vector

     Scalar CDSIN:  CSDIN% (call-by-register)
          on entry   (S1), (S2), (S3), and (S4) = argument
          on exit    (S1), (S2), (S3), and (S4) = result

     Vector CDSIN:  %CSDIN% (call-by-register)
          on entry   (V1), (V2), (V3), and (V4) = argument vecto
          on exit    (V1), (V2), (V3), and (V4) = result vector

   Argument Range
     SIN:
                 25
          |x| < 2

     DSIN:
                 45
          |x| < 2
                                       25
          On UNICOS/mk systems, |x| < 2

     CSIN:
                  25          13
          |x | < 2  , |x | < 2   * ln2
            r           i             25
          On UNICOS/mk systems, |x|< 2  , |x | < 710.47586
                                            i
     CDSIN:
                  45          13
          |x | < 2  , |x | < 2   * ln2
            r           i
NOTES
     CDSIN is an outmoded routine for the CF90 compiler.  Refer to the
     Fortran Language Reference Manual, Volume 3, publication SR-3905, for
     information about outmoded features and their preferred standard
     alternatives.

     The name of the SIN, DSIN, and CSIN intrinsic can be passed as an
     argument.  The name of the CDSIN intrinsic cannot be passed as an
     argument.

RETURN VALUES
     SIN returns the real sine of its real argument.

     DSIN returns the double-precision sine of its double-precision
     argument.

     CSIN returns the complex sine of its complex argument.

     CDSIN returns the complex double-precision sine of its complex
     double-precision argument.

     On CRAY T90 systems that support IEEE arithmetic, the following return
     values occur:
                                 25
          SIN(x) = NaN if |x| > 2

          SIN(NaN) = NaN

     Additional entry points are available on IRIX systems.  See the IRIX
     man pages for details.

SEE ALSO
     Intrinsic Procedures Reference Manual, publication SR-2138, for the
     printed version of this man page.