Mathematical formula in math. h

Introduction to mathematical formulas in math. h

1. trigonometric Functions
Double sin (double); sine
Double cos (double); cosine
Double Tan (double); tangent
2. Inverse trigonometric function
Double asin (double); the result is between [-PI/2, PI/2].
Double ACOs (double); the result is between [0, Pi]
Double atan (double); returns an arc tangent (Main Value). The result is between [-PI/2, PI/2].
Double atan2 (double, double); returns an arc tangent (an integer value) between [-Pi, Pi]
3. Hyperbolic trigonometric Functions
Double sinh (double );
Double cosh (double );
Double Tanh (double );
4. exponent and logarithm
Double exp (double); Calculate the power of natural number E
Double SQRT (double); Square
Double Log (double); logarithm Based on E
Double log10 (double); base-10 logarithm
Double POW (Double X, Double Y); Calculate the Power Y of the base number x
Float powf (float X, float y); consistent with pow, only the input and output are floating point numbers.
5. Integer
Double Ceil (double); rounded up
Double floor (double); remove the integer
6. Absolute Value
Double FABS (double); returns the absolute value.
Double cabs (struct complex znum); returns the absolute value of the plural.
7. Standard floating point number
Double frexp (double F, int * P); Standard floating point number, F = x * 2 ^ P, known f x, P (x between [0.5, 1])
Double ldexp (Double X, int P); opposite to frexp, we know that X and P evaluate F
8. Integer and remainder
Double MODF (double, double *); returns the integer part of the parameter through the pointer and returns the fractional part
Double fmod (double, double); returns the remainder of the two parameters.
9. Others
Double hypot (Double X, Double Y)
Double ldexp (Double X, int exponent); Calculate the power of x * (2)
Double poly (Double X, int degree, double coeffs []); polynomial calculation
NT matherr (struct exception * E); mathematical error calculation Handler