Integer64
- Import can read any file as a sequence of signed 64-bit integers.
- Export writes a list of integers in the range
to a binary file.
Background
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Import and Export
- Import["file","Integer64"] imports an arbitrary file as a sequence of signed 64-bit integers, returning a packed array of integers in the range
.
- Export["file",list,"Integer64"] exports a list of integers in the range
to a sequence of binary 64-bit integers.
- Import["file",{"Integer64",elem}] or Import["file",elem ] imports the specified element from file.
- Import["file",{"Integer64",{elem1,elem2,…}}] imports multiple elements.
- See the reference pages for full general information on Import and Export.
- ImportString and ExportString support the Integer64 format.
Elements
- General Import elements:
-
"Elements" elements and options available in this file "Rules" full rules for each element and option "Options" rules for options, properties, and settings - Data representation element:
-
"Data" list of integers in the range - By default, Import and Export use the "Data" element.
- Import["file",{"Integer64",n}] gives the n
64-bit integer.
- Trailing bytes are ignored if the size of the imported file is not a multiple of the data size.
Options
- General option:
-
ByteOrdering -1 what byte ordering to use - Import option:
-
"HeaderBytes" 0 how many bytes to skip at the beginning of the file
Examples
See Also
"Binary" "Bit" "Byte" "Character8" "Character16" "Integer8" "Integer16" "Integer24" "Integer32" "Integer128" "UnsignedInteger8" "UnsignedInteger16" "UnsignedInteger24" "UnsignedInteger32" "UnsignedInteger64" "UnsignedInteger128" "Real32" "Real64" "Real128" "Complex64" "Complex128" "Complex256" "String"
Related Guides
Introduced in 2004
(5.1)
| Updated in 2007 (6.0)