◆ exp2dp()
double exp2dp |
( |
double |
a | ) |
|
- Description:
- The exp2dp function returns the exponential function of a real floating-point argument a. The return value is the number 2 raised to the power a. If the magnitude of a is too large, the maximum double-precision floating-point number (1.797693e+308 = 2^1024) is returned.
- Parameters
-
- Returns
- Resultant double
- Special Cases:
- If | a | < 1.11e-16, then the return value is 1.0 for small arguments.
- If a < -1022, then the return value is 0.0.
- If a > +1024, then the return value is 1.797693e+308 = 2^1024 (maximum double-precision floating-point number).
- See also
-
- Implementation Notes:
- The code supports little endian mode.
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