# Source code for mars.tensor.arithmetic.radians

#!/usr/bin/env python
# -*- coding: utf-8 -*-
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# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
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import numpy as np
from ... import opcodes as OperandDef
from ..utils import infer_dtype
from .core import TensorUnaryOp
from .utils import arithmetic_operand
@arithmetic_operand(sparse_mode="unary")
class TensorRadians(TensorUnaryOp):
_op_type_ = OperandDef.RADIANS
_func_name = "radians"
[docs]@infer_dtype(np.radians)
def radians(x, out=None, where=None, **kwargs):
"""
Convert angles from degrees to radians.
Parameters
----------
x : array_like
Input tensor in degrees.
out : Tensor, None, or tuple of Tensor and None, optional
A location into which the result is stored. If provided, it must have
a shape that the inputs broadcast to. If not provided or `None`,
a freshly-allocated tensor is returned. A tuple (possible only as a
keyword argument) must have length equal to the number of outputs.
where : array_like, optional
Values of True indicate to calculate the ufunc at that position, values
of False indicate to leave the value in the output alone.
**kwargs
Returns
-------
y : Tensor
The corresponding radian values.
See Also
--------
deg2rad : equivalent function
Examples
--------
Convert a degree array to radians
>>> import mars.tensor as mt
>>> deg = mt.arange(12.) * 30.
>>> mt.radians(deg).execute()
array([ 0. , 0.52359878, 1.04719755, 1.57079633, 2.0943951 ,
2.61799388, 3.14159265, 3.66519143, 4.1887902 , 4.71238898,
5.23598776, 5.75958653])
>>> out = mt.zeros((deg.shape))
>>> ret = mt.radians(deg, out)
>>> ret is out
True
"""
op = TensorRadians(**kwargs)
return op(x, out=out, where=where)