← Previous revision | Revision as of 11:45, 10 May 2024 |
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| == Single-precision 32-bit == | == Single-precision 32-bit == |
| A [[single precision|single-precision]] HFP number (called "short" by IBM) is stored in a 32-bit word: | A [[single-precision floating-point format|single-precision]] HFP number (called "short" by IBM) is stored in a 32-bit word: |
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| == Double-precision 64-bit == | == Double-precision 64-bit == |
| The [[Double precision|double-precision]] HFP format (called "long" by IBM) is the same as the "short" format except that the fraction field is wider and the double-precision number is stored in a double word (8 bytes): | The [[double-precision floating-point format|double-precision]] HFP format (called "long" by IBM) is the same as the "short" format except that the fraction field is wider and the double-precision number is stored in a double word (8 bytes): |
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| == Extended-precision 128-bit == | == Extended-precision 128-bit == |
| Called extended-precision by IBM, a [[quadruple precision floating-point format|quadruple-precision]] HFP format was added to the System/370 series and was available on some S/360 models (S/360-85, -195, and others by special request or simulated by OS software). The extended-precision fraction field is wider, and the extended-precision number is stored as two double words (16 bytes): | Called extended-precision by IBM, a [[quadruple-precision floating-point format|quadruple-precision]] HFP format was added to the System/370 series and was available on some S/360 models (S/360-85, -195, and others by special request or simulated by OS software). The extended-precision fraction field is wider, and the extended-precision number is stored as two double words (16 bytes): |
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| * [[English Electric System 4]] | * [[English Electric System 4]] |
| * [[GEC 4000 series]] minicomputers | * [[GEC 4000 series]] minicomputers |
| * [[Interdata]] 16-bit and 32-bit computers | * [[Interdata]] 16- and 32-bit computers |
| * [[SDS Sigma series]] | * [[SDS Sigma series]] |
| * [[Data General]] minicomputers | * [[Data General]] minicomputers |
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