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This article mainly explains "the summary of mathematical functions in C++". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Next, let the editor take you to learn the "summary of mathematical functions in C++".

Math.h mathematical function library, the specific implementation of some mathematical formulas is put in math.h, specifically:

1 trigonometric function

Double sin (double)

Double cos (double)

Double tan (double)

2 inverse trigonometric function

Double asin (double); the result is between [- PI/2, PI/2]

Double acos (double); result is between [0, PI]

Double atan (double); arc tangent (principal value), the result is between [- PI/2, PI/2]

Double atan2 (double, double); arc tangent (integer value), the result is between [- PI/2, PI/2]

3 hyperbolic trigonometric function

Double sinh (double)

Double cosh (double)

Double tanh (double)

4 index and logarithm

Double exp (double)

Double pow (double, double)

Double sqrt (double)

Double log (double); logarithm based on e

Double log10 (double); natural logarithmic function in C++: log (N) has a base of 10: log10 (N), but there is no function with a base of 2, but it can be solved by the bottom-changing formula: log2 (N) = log10 (N) / log10 (2).

5 rounding

Double ceil (double)

Double floor (double); remove the whole

6 absolute value

Double fabs (double)

7 standardized floating point numbers

Double frexp (double f, int * p); standardized floating point number, f = x * 2 ^ p, known f to x, p (x between [0.5,1])

Double ldexp (double x, int p); contrary to frexp, known x, p find f

8 rounding and remainder

Double modf (double, double*); returns the integer part of the parameter through the pointer and returns the decimal part

Double fmod (double, double); returns the remainder of the division of two parameters

Source: "C & C++ Code Capsules"

9 square root

Sqrt

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