Static class: provides constant and static methods for trigonometric functions, logarithm functions, and other general mathematical functions.
Math. Abs (); returns the absolute value of the specified number, decimal double int16 int32 int64 single sbyte
Math. Cos (); returns the cosine of the specified angle.
Math. ACOs (); returns the angle from which the cosine value is the specified number.
Sin tan is similar
Math. exp (double D); returns the power D of the specified power e of E.
Math. Pow (Double X, Double Y); returns the Y Power of the specified power X of the specified number
Math. Log (double); a parameter returns the natural logarithm of a specified number.
Math. Ceiling (); returns the smallest integer greater than or equal to the specified number. The parameter is double decimal.
Math. Floor (); returns the maximum integer that is less than or equal to the specified number. The parameter is double decimal.
Math. Round (); round the value to the nearest integer or the specified decimal place.
Math. truncate (double) calculates the integer part of a number.
Math. ieeeremainder (Double X, Double Y) returns the remainder double value.
Math. divrem (int A, int B, out int result); returns the remainder of a/B, and the result receives the remainder.
Math. bigmul (int A, int B) returns long
Math. SQRT (double D) If D is the negative number, Nan is returned.