Numbers

The number format in the input stream is integer, float, or scientific format 3e10. Leading zeroes are allowed (e.g. 001), and float may omit a zero part before and/or after the decimal point (e.g. 0.3 can also be .3, 3.0 can also be 3.).

Operations

The operations are + - * / and ^ for power, all binary, and unary plus and minus. Also // (division without remainder) and \\ (modulo).

Precedence

Precedence is as normal: parentheses, ^ / * - +.

math '5+4*3^2' evaluate

outputs 41, i.e. 5 + (4 * (3 ^ 2))

math '3^2*4+5' evaluate

outputs 41, i.e. ((3 ^ 2) * 4) + 5).

Precedence of unary minus and plus is higher than exponentiation:

-2^-2 = (-2)^(-2), not -(2^-2)

Associativity

Binary operators are left associative, except ^ which is right associative:

100/10/5 outputs 2, i.e. (100 / 10) / 5

3-4-5 outputs -6, i.e. (3 - 4) - 5

4^3^2 outputs 262144, i.e. 4 ^ (3 ^ 2)

Output formats

Integers (3, unbounded range)

Fractions (3/4, unbounded range and precision. If you want to turn this into a float, 0.75, use a float as part of the calculation, e.g. 3/4.0)

Floats (3.0 or, if the absolute value is larger than 1,000,000 or smaller than 0.001, in scientific format 1.0e-4. Precision is 8 or 9 digits. Range is plus and minus 1.0e38 (an error will be raised if the range is exceeded).