Numpy数组常用函数汇总（数学运算、三角函数、位运算、比较运算及其它）

一、数学运算

函数名	description	说明
add(x1, x2, [, out, where, casting, order, …])	Add arguments element-wise.	按元素添加参数。
subtract(x1, x2, [, out, where, casting, …])	Subtract arguments, element-wise.	从元素角度减去参数。
multiply(x1, x2, [, out, where, casting, …])	Multiply arguments element-wise.	将参数逐元素相乘。
matmul(x1, x2, [, out, casting, order, …])	Matrix product of two arrays.	两个数组的矩阵乘积。
divide(x1, x2, [, out, where, casting, …])	Returns a true division of the inputs, element-wise.	以元素为单位返回输入的真实除法。
logaddexp(x1, x2, [, out, where, casting, …])	Logarithm of the sum of exponentiations of the inputs.	输入取幂之和的对数。
logaddexp2(x1, x2, [, out, where, casting, …])	Logarithm of the sum of exponentiations of the inputs in base-2.	以2为底的输入的幂和的对数。
true_divide(x1, x2, [, out, where, …])	Returns a true division of the inputs, element-wise.	以元素为单位返回输入的真实除法。
floor_divide(x1, x2, [, out, where, …])	Return the largest integer smaller or equal to the division of the inputs.	返回小于或等于输入除法的最大整数。
negative(x, [, out, where, casting, order, …])	Numerical negative, element-wise.	数值为负数，逐元素。
positive(x, [, out, where, casting, order, …])	Numerical positive, element-wise.	数值正数，逐元素。
power(x1, x2, [, out, where, casting, …])	First array elements raised to powers from second array, element-wise.	第一个数组元素在元素方面从第二个数组提升为幂。
float_power(x1, x2, [, out, where, …])	First array elements raised to powers from second array, element-wise.	第一个数组元素在元素方面从第二个数组提升为幂。
remainder(x1, x2, [, out, where, casting, …])	Return element-wise remainder of division.	返回元素的除法余数。
mod(x1, x2, [, out, where, casting, order, …])	Return element-wise remainder of division.	返回元素的除法余数。
fmod(x1, x2, [, out, where, casting, …])	Return the element-wise remainder of division.	返回元素的除法余数。
divmod(x1, x2[, out1, out2], [, out, …])	Return element-wise quotient and remainder simultaneously.	同时返回元素商和余数。
absolute(x, [, out, where, casting, order, …])	Calculate the absolute value element-wise.	按元素计算绝对值。