dart.math

Base of the natural logarithms.

Typically written as "e".

Natural logarithm of 10.

Natural logarithm of 2.

Base-10 logarithm of E.

Base-2 logarithm of E.

The PI constant.

Square root of 1/2.

Square root of 2.

Converts x to a double and returns the arc cosine of the value.

Returns a value in the range -PI..PI, or NaN if x is outside the range -1..1.

Converts x to a double and returns the arc sine of the value. Returns a value in the range -PI..PI, or NaN if x is outside the range -1..1.

Converts x to a dobule and returns the arc tangent of the vlaue. Returns a value in the range -PI/2..PI/2, or NaN if x is NaN.

A variant of atan.

Converts both arguments to doubles.

Returns the angle between the positive x-axis and the vector (b,a). The result, in radians, is in the range -PI..PI.

If b is positive, this is the same as atan(b/a).

The result is negative when a is negative (including when a is the double -0.0).

If a is equal to zero, the vector (b,a) is considered parallel to the x-axis, even if b is also equal to zero. The sign of b determines the direction of the vector along the x-axis.

Returns NaN if either argument is NaN.

Converts x to a double and returns the cosine of the value.

If x is not a finite number, the result is NaN.

Converts x to a double and returns the natural exponent, E, to the power x. Returns NaN if x is NaN.

Converts x to a double and returns the natural logarithm of the value. Returns negative infinity if x is equal to zero. Returns NaN if x is NaN or less than zero.

Returns the larger of two numbers.

Returns NaN if either argument is NaN. The larger of -0.0 and 0.0 is 0.0. If the arguments are otherwise equal (including int and doubles with the same mathematical value) then it is unspecified which of the two arguments is returned.

Returns the lesser of two numbers.

Returns NaN if either argument is NaN. The lesser of -0.0 and 0.0 is -0.0. If the arguments are otherwise equal (including int and doubles with the same mathematical value) then it is unspecified which of the two arguments is returned.

Returns x to the power of exponent.

If x is an int and exponent is a non-negative int, the result is an int, otherwise both arguments are converted to doubles first, and the result is a double.

For integers, the power is always equal to the mathematical result of x to the power exponent, only limited by the available memory.

For doubles, pow(x, y) handles edge cases as follows:

- if y is zero (0.0 or -0.0), the result is always 1.0. - if x is 1.0, the result is always 1.0. - otherwise, if either x or y is NaN then the result is NaN. - if x is negative (but not -0.0) and y is a finite non-integer, the result is NaN. - if x is Infinity and y is negative, the result is 0.0. - if x is Infinity and y is positive, the result is Infinity. - if x is 0.0 and y is negative, the result is Infinity. - if x is 0.0 and y is positive, the result is 0.0. - if x is -Infinity or -0.0 and y is an odd integer, then the result is -pow(-x ,y). - if x is -Infinity or -0.0 and y is not an odd integer, then the result is the same as pow(-x , y). - if y is Infinity and the absolute value of x is less than 1, the result is 0.0. - if y is Infinity and x is -1, the result is 1.0. - if y is Infinity and the absolute value of x is greater than 1, the result is Infinity. - if y is -Infinity, the result is 1/pow(x, Infinity).

This corresponds to the pow function defined in the IEEE Standard 754-2008.

Notice that an int result cannot overflow, but a double result might be double.INFINITY.

Converts x to a double and returns the sine of the value.

If x is not a finite number, the result is NaN.

Converts x to a double and returns the positive square root of the value.

Returns -0.0 if x is -0.0, and NaN if x is otherwise negative or NaN.

Converts x to a double and returns the tangent of the value.

The tangent function is equivalent to sin(x)/cos(x) and may be infinite (positive or negative) when cos(x) is equal to zero. If x is not a finite number, the result is NaN.