Lua standard library-mathematical functions)

This is a standard C arithmetic library. All functions are stored in the Math Table.

1. Math. Abs (X)

Function: returns the absolute value of X.

2. Math. ACOs (X)

Function: returns the arc cosine of X. The value x must be between-1 and 1.

3. Math. asin (X)

Function: returns the arc sine of X. The value x must be between-1 and 1.

4. Math. atan (X)

Function: returns the arc tangent of parameter X.

5. Math. atan2 (x, y)

Function: calculates the arc tangent value of Y/X (applicable when y = 0)

6. Math. Ceil (X)

Function: returns a minimum integer of no less than X. For example, Ceil (6.04) = 7

7. Math. Cos (X)

Function: returns the cosine of X, which is expressed in radians.

8. Math. cosh (X)

Function: returns the hyperbolic cosine of X.

9. Math. DEG (X)

Function: returns the degree of X, which is expressed in radians.

10. Math. exp (X)

Function: returns the X power of E (2.7182818) E.

11. Math. Floor (X)

Function: returns a maximum integer of no more than Arg. For example, floor (6.04) = 6

12. Math. fmod (x, y)

Function: returns the remainder of x/y.

13. Math. frexp (X)

Function: divides the parameter X into two parts and returns the ending number between m 0.5 and 1 (0 when X is 0) and the exponential E. X = m2e

14. Math. Huge

Function: returns a number greater than all values.

15. Math. ldexp (M, E)

Function: opposite to frexp, return the num * (2 ^ exp) parameter ). If overflow occurs, return huge_val.

16. Math. Log (X)

Function: returns the natural logarithm of parameter X. If X is negative, a domain error is generated. If X is zero, a Range Error is generated.

17. Math. log10 (X)

Function: returns the base-10 logarithm of parameter X. If X is negative, a domain error is generated. If X is zero, a Range Error is generated.

18. Math. Max (x ,...)

Function: returns the maximum value of all parameters.

19. Math. Min (x ,...)

Function: returns the minimum value of all parameters.

20. Math. MODF (X)

Function: divides the num parameter into integers and decimals.

21. Math. Pi

Function: The function returns the PI value.

22. Math. Pow (x, y)

Function: returns the yth power based on X. If X is zero or negative and Y is less than or equal to zero or non-integer, a domain error is generated. If overflow occurs, a Range Error occurs.

23. Math. Rad (X)

Function: returns the radians of x. x is the degree.

24. Math. Random ([M [, N])

Function: returns the number between [M, N]. If there is only m, the number of [1, m] is returned.

25. Math. randomseed (X)

Function: sets random seed X.

26. Math. Sin (X)

Function: returns the sine of the ARG parameter, which is expressed in radians.

27. Math. sinh (X)

Function: returns the hyperbolic sine of the ARG parameter.

28. Math. SQRT (X)

Function: returns the square root or 1/2 degrees of X. If num is negative, a domain error is generated.

28. Math. Tan (X)

Function: returns the tangent of the ARG parameter, which is expressed in radians.

28. Math. Tanh (X)

Function: returns the hyperbolic tangent of the ARG parameter.

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