FindDouble

The FindDouble method searches file for specified double precision (64 bit) floating point number sequence and returns position of matching data in file.
C++
long FindDouble(
  double *DoubleDatar,                // buffer containing searched data
  long NumberOfElements,              // number of elements in data sequence
  long StartingPosition = 0,          // starting position of search
  long Range = -1,                    // search range
  long Options = 0                    // search options
);
BASIC
FindDouble(
  DoubleData As Variant,              // variant containing searched data
  NumberOfElements As Long = -1,      // number of elements in data sequence
  StartingPosition As Long = 0,       // starting position of search
  Range As Long = -1,                 // search range
  Options As SearchOptions = 0        // search options
) As Long

Parameters

DoubleData
C++
Pointer to buffer containing double precision floating point number sequence to be searched for.
BASIC
Variant containing double precision floating point number sequence to be searched for.
Variant must be of Double data type; it can be either single variable or one-dimensional array.
NumberOfElements
Number of elements in data sequence to be matched.
BASIC
If this parameter is -1 length of searched sequence is determined by the number of elements in DoubleData.
StartingPosition
Starting position of search in file.
If this parameter is -1 search begins at current file position.
If this parameter is 0 and Options have IXF_FIND_REVERSE flag set, search begins from the end of file.
Range
Length of file region to be searched, in bytes.
If this parameter is -1 search is continued until end of file or beginning of file depending on search direction.
Options
Search options, specified as a combination of the following values:
IXF_FIND_REVERSE backward search (towards beginning of file).

Return Values

If the method succeeds, the return value is the position of matching sequence in file.
The return value is IXF_FAILURE_NOTFOUND if specified data sequence has not been found.
If the method fails, the return value is failure code and error code is set. Call GetError to get error code.

Remarks

Data is searched in file starting from StartingPosition and continuing until matching sequence is found or search region has ended. File data must match entire sequence and must be positioned entirely within search region; it means that 'matching' sequence which starts within search region but ends beyond it is not recognized as matching.

StartingPosition always specifies absolute starting position in file regardless of direction of search. The only exception is when this parameter is 0 and Options have IXF_FIND_REVERSE flag set; in such situation search begins from the end of file.

See Also

FindByte, FindShort, FindLong, FindFloat, FindText, FindUnicodeText, FindVariant, FindBinary, Finding Data