Summary of Mathematical functions in C++
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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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