Categories math - r3n/rebol-wiki GitHub Wiki

Math Functions Mathematical operations.
* Returns the first value multiplied by the second.
** Returns the first number raised to the second number.
+ Returns the result of adding two values.
- Returns the second value subtracted from the first.
/ Returns the first value divided by the second.
// Returns the remainder of first value divided by second.
abs Returns the absolute value.
absolute Returns the absolute value.
add Returns the result of adding two values.
and Returns the first value ANDed with the second.
arccosine Returns the trigonometric arccosine in degrees.
arcsine Returns the trigonometric arcsine in degrees.
arctangent Returns the trigonometric arctangent in degrees.
complement Returns the one's complement value.
cosine Returns the trigonometric cosine in degrees.
divide Returns the first value divided by the second.
even? Returns TRUE if the number is even.
exp Raises E (natural number) to the power specified.
log-10 Returns the base-10 logarithm.
log-2 Return the base-2 logarithm.
log-e Returns the base-E (natural number) logarithm.
max Returns the greater of the two values.
maximum Returns the greater of the two values.
maximum-of Finds the largest value in a series
min Returns the lesser of the two values.
minimum Returns the lesser of the two values.
minimum-of Finds the smallest value in a series
mod Compute a nonnegative remainder of A divided by B.
modulo Wrapper for MOD that handles errors like REMAINDER. Negligible 
values (compared to A and B) are rounded to zero.
multiply Returns the first value multiplied by the second.
negate Changes the sign of a number.
negative? Returns TRUE if the number is negative.
not Returns the logic complement.
odd? Returns TRUE if the number is odd.
or Returns the first value ORed with the second.
positive? Returns TRUE if the value is positive.
power Returns the first number raised to the second number.
random Returns a random value of the same datatype.
remainder Returns the remainder of first value divided by second.
round Returns the nearest integer. Halves round up (away from zero) by default.
sign? Returns sign of number as 1, 0, or -1 (to use as multiplier).
sine Returns the trigonometric sine in degrees.
square-root Returns the square root of a number.
subtract Returns the second value subtracted from the first.
tangent Returns the trigonometric tangent in degrees.
xor Returns the first value exclusive ORed with the second.
zero? Returns TRUE if the number is zero.
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