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 & Context
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- Uniform sequence of signed 64-bit integers.
- Binary data format.
Import & 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 following reference pages for full general information:
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Import, Export import from or export to a file CloudImport, CloudExport import from or export to a cloud object ImportString, ExportString import from or export to a string ImportByteArray, ExportByteArray import from or export to a byte array
Import Elements
- General Import elements:
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"Elements" list of elements and options available in this file "Summary" summary of the file "Rules" list of rules for all available elements - Data representation element:
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"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:
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ByteOrdering $ByteOrdering what byte ordering to use - Import option:
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"HeaderBytes" 0 how many bytes to skip at the beginning of the file