Mathematical methods and constants commonly used in programming

Just list some of the more commonly used, specific can view the Math.h file

Arithmetic functions:

int rand (): Returns the int type random number

int random (): Returns a long type random number

ABS: Returns the absolute value of shaping

int abs (int)

Float fabsf (float)

Double fabs (double)

Long double FABSL (long double)

Floor (): Returns the largest integer not greater than the floating-point number

Float Floorf (float)

Double floor (double)

Long double floorl (long double)

Ceil (): Returns the smallest integer not less than the floating-point number

Float Ceilf (float)

Double ceil (double)

Long double Ceill (long double)

POW (): Returns the B-side of a

Float powf (float, float)

Double pow (double, double)

Long double powl (long double , long double)

SQRT (): Returns the open root of a

Float sqrtf (float);

Double sqrt (double);

A long double Sqrtl (long double);

Trigonometric function:

ACOs: Inverse cosine function (parameter: radians)

Float acosf (float);

Double ACOs (double);

A long double Acosl (long double);

ASIN: Inverse chord function (parameter: radians)

Asinf (float);

Double ASIN (double);

A long double asinl (long double);

Atan: Inverse tangent function (parameter: radians)

Float atanf (float);

Double atan (double);

A long double atanl (long double);

atan2: returns the inverse tangent value of the given a and b coordinate values

Float atan2f (float, float);

Double atan2 (double, double);

A long double atan2l (long double , long double);

Cos: cosine function (parameter: radians)

Float cosf (float);

Double cos (double);

A long double COSL (long double);

sin: sine function (parameter: radians)    

Float sinf (float);

Double sin (double);

　　A long double sinl (long double);

Tan: Tangent function (parameter: radians)    

Float tanf (float);

Double tan (double);

A long double tanl (long double);

exponential function:

LOG: With E as the base

Float logf (float);

Double log (double);

A long double logl (long double);

LOG10: base 10

Float log10f (float);

Double log10 (double);

A long double log10l (long double);

constants:

　　M_PI =π

M_1_PI = 1/π

M_2_PI = 2/π

M_pi_2 =Π/2

M_pi_4 =Π/4

M_e=e m_log2e=log_2 (E) m_log10e=log_10 (e)# define Cgfloat_min min floating point

# define Cgfloat_max Maximum floating point number

# define Nsintegermax maximum integer type

#define NSINTEGERMIN Minimum integer type

#define NSUINTEGERMAX Max unsigned integral type

#define INFINITY infinitely Large

Mathematical methods and constants commonly used in programming