VEC_$DP_SP                        Domain/OS                         VEC_$DP_SP


NAME
     vec_$dp_sp - copy a double-precision vector to a single-precision vector

SYNOPSIS (C)
     #include <apollo/base.h>
     #include <apollo/vec.h>

     void vec_$dp_sp(
          double *dp_vec,
          float *sp_vec,
          long int &length)

SYNOPSIS (Pascal)
     %include '/sys/ins/base.ins.pas';
     %include '/sys/ins/vec.ins.pas';

     procedure vec_$dp_sp(
          in dp_vec: univ vec_$double_vector;
          in sp_vec: univ vec_$real_vector;
          in length: integer32);

SYNOPSIS (FORTRAN)
     %include '/sys/ins/base.ins.ftn'
     %include '/sys/ins/vec.ins.ftn'

           parameter (nvec = 10)

           real sp_vec(nvec)
           double precision dp_vec(nvec)
           integer*4 length

           call vec_$dp_sp(dp_vec, sp_vec, length)

DESCRIPTION
     Vec_$dp_sp copies length elements from the double-precision vector dp_vec
     to the single-precision vector sp_vec.

     In C, the resulting operation is

          for (i = 0; i < length; ++i)
               sp_vec[i] = (float)dp_vec[i];

     In Pascal, the resulting operation is

          for i := 1 to length do
               begin
               sp_vec[i] := dp_vec[i];
               end

     In FORTRAN, the resulting operation is

           do 10 i=1, length
               sp_vec(i) = sngl(dp_vec(i))
       10  continue

     dp_vec
          The double-precision vector to copy from.

     sp_vec
          The single-precision vector to copy to.

     length
          The number of elements to copy.

NOTES
     In C and Pascal, vec_$dp_sp copies a row vector; whereas in FORTRAN, it
     copies a column vector.

SEE ALSO
     vec_$dp_sp_i, vec_$sp_dp.