Double is useful for scientific computations (such as computing spatial coordinates). Decimal is useful for financial computations and values that are “man-made” rather than the result of real-world measurements. Here’s a summary of the differences.
Most business applications should probably be using decimal rather than float or double. Our thumb rule should be manmade values such as currency are usually better represented with decimal floating point.
Hope this helps.
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Happy Coding
Gopinath
| Category | Double | Decimal |
| Internal Representation | Base 2 | Base 10 |
| Decimal Precision | 15-16 Significant Figures | 28-29 Significant figures |
| Range | ±(~10−324 to ~10308) | ±(~10−28 to ~1028) |
| Special Values | +0, −0, +∞, −∞, and NaN | None |
| Speed | Native to processor | Non-native
to processor (about 10 times slower than double) |
Most business applications should probably be using decimal rather than float or double. Our thumb rule should be manmade values such as currency are usually better represented with decimal floating point.
Hope this helps.
--
Happy Coding
Gopinath
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