| title | Type double | Microsoft Docs | ||||
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| ms.date | 11/04/2016 | ||||
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| ms.topic | article | ||||
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| ms.assetid | 17c85b24-1475-4d41-a03c-ddf2d6561d34 | ||||
| caps.latest.revision | 7 | ||||
| author | mikeblome | ||||
| ms.author | mblome | ||||
| manager | ghogen |
Double precision values with double type have 8 bytes. The format is similar to the float format except that it has an 11-bit excess-1023 exponent and a 52-bit mantissa, plus the implied high-order 1 bit. This format gives a range of approximately 1.7E-308 to 1.7E+308 for type double.
Microsoft Specific
The double type contains 64 bits: 1 for sign, 11 for the exponent, and 52 for the mantissa. Its range is +/-1.7E308 with at least 15 digits of precision.
END Microsoft Specific