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Functions |
| int | __IsNan (double d) |
| | Is Not-A-Number. Returns whether x is a NaN (Not-A-Number) value. The NaN values are used to identify undefined or non-representable values for floating-point elements, such as the square root of negative numbers or the result of 0/0.
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| double | sign (double x) |
| | Returns a value indicating the sign of a double-precision floating-point number.
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| double | fabs (double x) |
| | Returns the absolute value of x: |x|.
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| int | signbit (double x) |
| | Sign bit. Returns whether the sign of x is negative.
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| int | isfinite (double x) |
| | Is finite value. Returns whether x is a finite value.
A finite value is any floating-point value that is neither infinite nor NaN (Not-A-Number).
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| int | isnan (double x) |
| | Is Not-A-Number. Returns whether x is a NaN (Not-A-Number) value.
The NaN values are used to identify undefined or non-representable values for floating-point elements, such as the square root of negative numbers or the result of 0/0.
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| int | isinf (double x) |
| | Is infinity. Returns whether x is an infinity value (either positive infinity or negative infinity).
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