sumai_c

Index Page sumai_c
A B C D E F G H I J K L M N O P Q R S T U V W X
Procedure Abstract Required_Reading Keywords Brief_I/O Detailed_Input | Detailed_Output Parameters Exceptions Files Particulars Examples | Restrictions Literature_References Author_and_Institution Version Index_Entries
#### Procedure
       SpiceInt sumai_c ( ConstSpiceInt   * array,
                          SpiceInt          n     )
#### Abstract
        Return the sum of the elements of an integer array.
#### Required_Reading
       None.
#### Keywords
       ARRAY,  MATH,  UTILITY
#### Brief_I/O
       VARIABLE  I/O  DESCRIPTION
       --------  ---  --------------------------------------------------
       array      I   Input array.
       n          I   Number of elements in the array.

       The function returns the sum of the elements of the input array.
#### Detailed_Input
       array       is the input array.

       n           is the number of elements in the array.
#### Detailed_Output
       The function returns the sum of the elements of the input array.
       That is,

          sumai_c ( array, n )  =  array[0] + array[1] + ... + array[n-1]

       If n is zero or negative, sumai_c returns zero.
#### Parameters
       None.
#### Exceptions
       Error free.
#### Files
       None.
#### Particulars
       The value of the function is initially set to zero. The elements
       of the array are then added. If the number of elements is zero or
       negative, sumai_c is zero.
#### Examples
       Let array contain the following elements.

             array[0] = 12
             array[1] =  1
             array[2] =  4
             array[3] = 75
             array[4] = 18

       Then

             sumai_c ( array,   -3 )       =   0
             sumai_c ( array,    0 )       =   0
             sumai_c ( array,    1 )       =  12
             sumai_c ( array,    2 )       =  13
             sumai_c ( array,    5 )       = 110
             sumai_c ( array+2,  3 )       =  97
#### Restrictions
       sumai_c does not check for overflow.
#### Literature_References
       None.
#### Author_and_Institution
       N.J. Bachman    (JPL)
       I.M. Underwood  (JPL)
#### Version
       -CSPICE Version 1.0.0, 24-MAR-1999 (IMU) (NJB)
#### Index_Entries
       sum of an integer array
#### Link to routine sumai_c source file sumai_c.c

    Thu Apr 16 08:59:20 2009