Procedure

   void vminug_c ( ConstSpiceDouble  * vin,
                   SpiceInt            ndim,
                   SpiceDouble       * vout )

Abstract

   Negate a double precision vector of arbitrary dimension.

Required_Reading

    None.

Keywords

    VECTOR

Brief_I/O

    VARIABLE  I/O  DESCRIPTION
    --------  ---  --------------------------------------------------
     vin       I   ndim-dimensional double precision vector to
                   be negated.
     ndim      I   Dimension of vin (and also vout).
     vout      O   ndim-dimensional double precision vector equal to
                   -vin.

Detailed_Input

    vin      double precision vector of arbitrary size.

    ndim     the dimension of vin and vout.

Detailed_Output

    vout    a double precision vector which contains the negation
            of vin. vout may overwrite vin.

Parameters

    None.

Exceptions

   Error free.

Files

    None.

Particulars

    For each value of the index i from 1 to ndim, vminug_c negates vin
    by the expression:

    vout[i] = - vin[i];

Examples

    Let vin = [ -10.0, 15.0, -5.0, 20.0 ]

    The call

    vminug_c ( vin, 4, vin )

    negates all of the components of the vector VIN, and overwrites
    the original components. The vector VIN then contains the
    components

    vin = [ 10.0, -15.0, 5.0, -20.0 ]

Restrictions

    None.

Literature_References

    None.

Author_and_Institution

    W.M. Owen       (JPL)
    E.D. Wright     (JPL)

Version

   -CSPICE Version 1.0.0, 29-JUN-1999

Index_Entries

   negate an n-dimensional vector

Link to routine vminug_c source file vminug_c.c