Numbers

The built-in numeric types are integers and floats, which are equivalent to Wrapping<i32> and f32 respectively.

Floats are "contagious". When an arithmetic function receives at least one float argument, the return value is usually a float, even when its other arguments are integers.

Arithmetic

+

Addition.

-

Subtraction or negation.

*

Multiplication.

/

Division or reciprocation.

%

Remainder.

div-euclid

Euclidean division.

rem-euclid

Euclidean remainder.

abs

Absolute value.

sign

Sign.

Predicates

even?

Returns #t if its argument is even.

odd?

Returns #t if its argument is odd.

nat-int?

Returns #t if its argument is a natural integer (>= 0).

pos-int?

Returns #t if its argument is a positive integer (> 0).

neg-int?

Returns #t if its argument is a negative integer (< 0).

nan?

Returns #t if its argument is a NaN.

inf?

Returns #t if its argument is infinite.

Comparisons

==

Numeric equality test.

<

Numeric less-than test.

<=

Numeric less-than-or-equal test.

>

Numeric greater-than test.

>=

Numeric greater-than-or-equal test.

ord

Numeric ordering.

min

Minimum.

max

Maximum.

clamp

Clamps a value to a numeric range.

Mathematics

round

Round-to-nearest.

floor

Round down.

ceil

Round up.

sqrt

Square root.

cbrt

Cube root.

pow

Exponentiation.

log

Logarithm.

flo-sign

Floating-point sign bit.

trunc

Returns the integer part of a float, as a float.

fract

Returns the fractional part of a float.

sin

Sine, in radians.

cos

Cosine, in radians.

tan

Tangent, in radians.

asin

Arcsine, in radians.

acos

Arccosine, in radians.

atan

Arctangent, in radians.

Bit Manipulation

bitand

Bitwise AND.

bitor

Bitwise inclusive OR.

bitxor

Bitwise exclusive OR.

bitnot

Bitwise NOT.

bitshl

Left shift.

bitshr

Logical right shift.

bitsar

Arithmetic right shift.

Randomness

rand

Generates a random number.

coin-flip

Equal chance of returning either #t or #f.

chance

Returns #t or #f in the given ratio.

rand-select

Randomly selects one of its arguments.

rand-weighted

Randomly selects one item from a group, with unequal probability.

rand-reseed

Restarts the random number generator from a fixed seed.

Miscellaneous

smoothstep

Smoothly interpolates between 0.0 and 1.0.

seek

Moves closer to a target value.

antiseek

Moves away from a target value.

Evaluation
Collections