IOS math.h Common math functions

1. Trigonometric function
Double sin (double); sine
Double cos (double); cosine
Double tan (double); tangent
2, Inverse trigonometric functions
Double asin (double); Results between [-PI/2, PI/2]
Double ACOs (double); Results between [0, PI]
Double Atan (double); Tangent (primary value), the result is between [-PI/2, PI/2]
Double atan2 (double, double); Tangent (integer circle value), the result is between [-pi, PI]
3. Double Curved Trigonometric Functions
Double Sinh (double);
Double cosh (double);
Double Tanh (double);
4. Index and logarithm
Double exp (double), exponentiation of natural number E
Double sqrt (double) open square
Double log (double); Logarithm with e as the base
Double log10 (double); 10-based logarithm
Double pow (double x, double y); Calculate y-Power with X as base
float POWF (float x, float y); function is consistent with POW, except that both input and output are floating-point numbers
5. Take the whole
Double ceil (double); Take the whole
Double floor (double); Remove the whole
6. Absolute value
Double fabs (double);
Double cabs (struct complex znum); To find the absolute value of plural
7. Standardized floating point numbers
Double Frexp (double f, int *p); Standard floating-point number, F = x * 2^p, known F for X, p (x between [0.5, 1])
Double Ldexp (double x, int p); In contrast to Frexp, known as x, P F
8. Take the whole and take the remainder
Double Modf (double, double*); Returns the integer part of the parameter by the pointer, returning the decimal part
Double Fmod (double, double); Returns the remainder of the divide between two parameters
9. Other
Double Hypot (double x, double y); known right triangle two right-angled edge length, bevel length
Double Ldexp (double x, int exponent); compute x* (exponent power of 2)
Double poly (double x, int degree, double coeffs []), calculating polynomial
NT Matherr (struct exception *e); Math Error Calculation handler
where Math.h put it. That's a C function library: Enter a math function, and then double-click the function--> right button with jump to definition can jump into this header file--> right click the show in Finder, you know where the header file.