(IUCr) CIF Definition save__array_structure.encoding_type

DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment

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Index

##### Image dictionary (imgCIF) version 1.5.4

# _array_structure.encoding_type

Name:
`'_array_structure.encoding_type'`

Definition:

            Data encoding of a single element of array data.

                   The type 'unsigned 1-bit integer' is used for
                   packed Booleans arrays for masks.  Each element
                   of the array corresponds to a single bit
                   packed in unsigned 8-bit data.

                   In several cases, the IEEE format is referenced.
                   See IEEE Standard 754-1985 (IEEE, 1985).

                   Ref: IEEE (1985). IEEE Standard for Binary Floating-Point
                   Arithmetic. ANSI/IEEE Std 754-1985. New York: Institute of
                   Electrical and Electronics Engineers.

Type: uline

Mandatory item: yes

The data value must be one of the following:

`'unsigned 1-bit integer'` |

`'unsigned 8-bit integer'` |

`'signed 8-bit integer'` |

`'unsigned 16-bit integer'` |

`'signed 16-bit integer'` |

`'unsigned 32-bit integer'` |

`'signed 32-bit integer'` |

`'signed 32-bit real IEEE'` |

`'signed 64-bit real IEEE'` |

`'signed 32-bit complex IEEE'` |

Category: array_structure

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Copyright © 2005 International Union of Crystallography