math.fmod() - math

Return fmod(x, y), as defined by the platform C library. Note that the
Python expression x % y may not return the same result.  The intent of the C
standard is that fmod(x, y) be exactly (mathematically; to infinite
precision) equal to x - n*y for some integer n such that the result has
the same sign as x and magnitude less than abs(y).  Python’s x % y
returns a result with the sign of y instead, and may not be exactly computable
for float arguments. For example, fmod(-1e-100, 1e100) is -1e-100, but
the result of Python’s -1e-100 % 1e100 is 1e100-1e-100, which cannot be
represented exactly as a float, and rounds to the surprising 1e100.  For
this reason, function fmod() is generally preferred when working with
floats, while Python’s x % y is preferred when working with integers.

Syntax

math.fmod(x, y)

Example

Output / Return Value

Limitations

Alternatives / See Also

Reference