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# Copyright (c) 2015 Ultimaker B.V.
# Uranium is released under the terms of the LGPLv3 or higher.
## Class containing helper functions for dealing with IEEE-754 floating point numbers.
#
#
class Float:
## Compare two floats to check if they are equal with a tolerance value.
#
# This method will compare two floats and check whether they are equal to
# within a certain tolerance value.
#
# \param f1 \type{float} The first value to compare.
# \param f2 \type{float} The second value to compare.
# \param tolerance \type{float} The amount of tolerance used to consider the two numbers "equal".
#
# \return True if the two numbers are considered equal, False if not.
@staticmethod
def fuzzyCompare(f1, f2, tolerance = 1e-8):
if f1 == f2:
return True
return f1 > (f2 - tolerance) and f1 < (f2 + tolerance)
## Return the value clamped to a minimum and maximum value.
#
# \param f1 \type{float} The value to clamp.
# \param minimum \type{float} The minimum value.
# \param maximum \type{float} The maximum value.
#
# \return \type{float} Minimum if f1 < minimum, maximum if f1 > maximum, else f1.
@staticmethod
def clamp(f1, minimum, maximum):
return min(max(f1, minimum), maximum)
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