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# (C) Copyright 2017- ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
#
# In applying this licence, ECMWF does not waive the privileges and immunities
# granted to it by virtue of its status as an intergovernmental organisation
# nor does it submit to any jurisdiction.
import numpy as np
def neg(x):
return -x
def pos(x):
return x
# def abs(x):
# return np.abs(x)
def not_func(x):
return (~(x != 0)).astype(int)
def add(x, y):
return x + y
def sub(x, y):
return x - y
def mul(x, y):
return x * y
def div(x, y):
return x / y
def pow(x, y):
return x**y
def ge(x, y):
return (x >= y).astype(int)
def gt(x, y):
return (x > y).astype(int)
def le(x, y):
return (x <= y).astype(int)
def lt(x, y):
return (x < y).astype(int)
def eq(x, y):
return (x == y).astype(int)
def ne(x, y):
return (x != y).astype(int)
def and_func(x, y):
return ne(x, 0) * ne(y, 0)
def or_func(x, y):
return np.clip(ne(x, 0) + ne(y, 0), 0, 1)
def set_from_other(x, y):
return y
# single argument functions
def abs(x):
return np.fabs(x)
def acos(x):
return np.arccos(x)
def asin(x):
return np.arcsin(x)
def atan(x):
return np.arctan(x)
def cos(x):
return np.cos(x)
def exp(x):
return np.exp(x)
def log(x):
return np.log(x)
def log10(x):
return np.log10(x)
def sgn(x):
return np.sign(x)
def square(x):
return np.square(x)
def sqrt(x):
return np.sqrt(x)
def sin(x):
return np.sin(x)
def tan(x):
return np.tan(x)
# double argument functions
def atan2(x, y):
return np.arctan2(x, y)
def floor_div(x, y):
return np.floor_divide(x, y)
def mod(x, y):
return np.mod(x, y)
# bitmapping
def bitmap(x, y):
if isinstance(y, (int, float)):
x[x == y] = np.nan
return x
elif isinstance(y, np.ndarray):
x[np.isnan(y)] = np.nan
return x
def nobitmap(x, y):
x[np.isnan(x)] = y
return x
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