C++中常用数学函数命令有哪些？越多越好！

abs
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the absolute value of the elements of the input valarray.

acos
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the arccosine of the elements of the input valarray.

asin
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the arcsine of the elements of the input valarray.

atan
Operates on the elements of an input valarray, returning a valarray whose elements are equal to the principal value of the arctangent of the elements of the input valarray.

atan2
Returns a valarray whose elements are equal to the arctangent of the Cartesian components specified by a combination of constants and elements of valarrays.

cos
Operates on the elements of an input valarray, returning a valarray whose elements are