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Diffstat (limited to 'Doc/library/math.rst')
| -rw-r--r-- | Doc/library/math.rst | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Doc/library/math.rst b/Doc/library/math.rst index 11d3b756e21..c8061fb1638 100644 --- a/Doc/library/math.rst +++ b/Doc/library/math.rst @@ -53,6 +53,8 @@ noted otherwise, all return values are floats. :func:`frexp(x) <frexp>` Mantissa and exponent of *x* :func:`isclose(a, b, rel_tol, abs_tol) <isclose>` Check if the values *a* and *b* are close to each other :func:`isfinite(x) <isfinite>` Check if *x* is neither an infinity nor a NaN +:func:`isnormal(x) <isnormal>` Check if *x* is a normal number +:func:`issubnormal(x) <issubnormal>` Check if *x* is a subnormal number :func:`isinf(x) <isinf>` Check if *x* is a positive or negative infinity :func:`isnan(x) <isnan>` Check if *x* is a NaN (not a number) :func:`ldexp(x, i) <ldexp>` ``x * (2**i)``, inverse of function :func:`frexp` @@ -373,6 +375,24 @@ Floating point manipulation functions .. versionadded:: 3.2 +.. function:: isnormal(x) + + Return ``True`` if *x* is a normal number, that is a finite + nonzero number that is not a subnormal (see :func:`issubnormal`). + Return ``False`` otherwise. + + .. versionadded:: next + + +.. function:: issubnormal(x) + + Return ``True`` if *x* is a subnormal number, that is a finite + nonzero number with a magnitude smaller than the smallest positive normal + number, see :data:`sys.float_info.min`. Return ``False`` otherwise. + + .. versionadded:: next + + .. function:: isinf(x) Return ``True`` if *x* is a positive or negative infinity, and |