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| -rw-r--r-- | docs/library/math.rst | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/docs/library/math.rst b/docs/library/math.rst index 988a8c2843..6ed42333c7 100644 --- a/docs/library/math.rst +++ b/docs/library/math.rst @@ -90,7 +90,10 @@ Functions .. function:: frexp(x) - Converts a floating-point number to fractional and integral components. + Decomposes a floating-point number into its mantissa and exponent. + The returned value is the tuple ``(m, e)`` such that ``x == m * 2**e`` + exactly. If ``x == 0`` then the function returns ``(0.0, 0)``, otherwise + the relation ``0.5 <= abs(m) < 1`` holds. .. function:: gamma(x) |