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49 lines
889 B
Python
49 lines
889 B
Python
_tol = 1e-5
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def sim(a,b):
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if (a==b):
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return True
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elif a == 0 or b == 0:
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return False
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if (a<b):
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return (1-a/b)<=_tol
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else:
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return (1-b/a)<=_tol
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def nsim(a,b):
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if (a==b):
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return False
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elif a == 0 or b == 0:
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return True
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if (a<b):
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return (1-a/b)>_tol
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else:
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return (1-b/a)>_tol
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def gsim(a,b):
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if a >= b:
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return True
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return (1-a/b)<=_tol
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def lsim(a,b):
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if a <= b:
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return True
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return (1-b/a)<=_tol
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def set_tol(value=1e-5):
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r"""Set Error Tolerance
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Set the tolerance for detriming if two numbers are simliar, i.e
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:math:`\left|\frac{a}{b}\right| = 1 \pm tolerance`
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Parameters
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----------
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value: float
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The Value to set the tolerance to show be very small as it respresents the
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percentage of acceptable error in detriming if two values are the same.
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"""
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global _tol
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if isinstance(value,float):
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_tol = value
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else:
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raise TypeError(type(value)) |