*

  Data:  nn-n
  Addr:  -
  Float: -

Multiply `n1` by `n2` and return the result.

Class: class:primitive | Namespace: global | Interface Layer: all

Example #1:

    #2 #6 *
    #-1 #100 *

+

  Data:  nn-n
  Addr:  -
  Float: -

Add `n1` to `n2` and return the result.

Class: class:primitive | Namespace: global | Interface Layer: all

Example #1:

    #1 #2 + 

---reveal---

  Data:  -
  Addr:  -
  Float: -

Switch to the exposed (public) portion of a lexical namespace.

Class: class:word | Namespace: global | Interface Layer: all

/

  Data:  nm-v
  Addr:  -
  Float: -

Divide `n` by `m` and return the integer part of the quotient.

Class: class:word | Namespace: global | Interface Layer: all

/mod

  Data:  nm-rv
  Addr:  -
  Float: -

Divide `n` by `m` and return the integer part of the quotient and remainder.

Class: class:primitive | Namespace: global | Interface Layer: all

;

  Data:  -
  Addr:  -
  Float: -

End the current definition.

Class: class:macro | Namespace: global | Interface Layer: all

[

  Data:  -
  Addr:  -
  Float: -

Begin a quotation.

Class: class:macro | Namespace: global | Interface Layer: all

]

  Data:  -
  Addr:  -
  Float: -

End a quotation.

Class: class:macro | Namespace: global | Interface Layer: all

allot

  Data:  n-
  Addr:  -
  Float: -

Allocate the specified number of cells from the `Heap`.

Class: class:word | Namespace: global | Interface Layer: all

Example #1:

    'Buffer d:create  #100 allot

buffer:add

  Data:  n-
  Addr:  -
  Float: -

Append a value to the current buffer.

Class: class:word | Namespace: buffer | Interface Layer: all

buffer:preserve

  Data:  q-
  Addr:  -
  Float: -

Save and restore the current buffer before and after executing the specified quote.

Class: class:word | Namespace: buffer | Interface Layer: all

buffer:set

  Data:  a-
  Addr:  -
  Float: -

Assign a new buffer as the current one.

Class: class:word | Namespace: buffer | Interface Layer: all

buffer:start

  Data:  -a
  Addr:  -
  Float: -

Return the start address of the current buffer.

Class: class:word | Namespace: buffer | Interface Layer: all

call

  Data:  a-
  Addr:  -
  Float: -

Call a function.

Class: class:primitive | Namespace: global | Interface Layer: all

choose

  Data:  fqq-
  Addr:  -
  Float: -

Execute q1 if the flag is true (-1) or q2 if the flag is false (0). Only these flags are valid when using `choose`; passing other values as flags will result in memory corruption.

Class: class:word | Namespace: global | Interface Layer: all

d:create

  Data:  s-
  Addr:  -
  Float: -

Hook. Create a new dictionary header named the specified string. The new header will point to `here` and have a class of `class:data`.

Class: class:word | Namespace: d | Interface Layer: all

drop

  Data:  n-
  Addr:  -
  Float: -

Discard the top value on the stack.

Class: class:primitive | Namespace: global | Interface Layer: all

dup

  Data:  n-nn
  Addr:  -
  Float: -

Duplicate the top item on the stack.

Class: class:primitive | Namespace: global | Interface Layer: all

eq?

  Data:  nn-f
  Addr:  -
  Float: -

Compare two values for equality. Returns `TRUE` if they are equal or `FALSE` otherwise.

Class: class:primitive | Namespace: global | Interface Layer: all

Example #1:

    #1 #2 eq?
    $a $b eq?

fetch

  Data:  a-n
  Addr:  -
  Float: -

Fetch the value stored at the specified address.

Class: class:primitive | Namespace: global | Interface Layer: all

Example #1:

    &Version fetch

if

  Data:  fq-
  Addr:  -
  Float: -

Execute the quote if the flag is `TRUE`.

Class: class:word | Namespace: global | Interface Layer: all

n:abs

  Data:  n-n
  Addr:  -
  Float: -

Return the absolute value of a number.

Class: class:word | Namespace: n | Interface Layer: all

Example #1:

    #10 n:abs
    #-10 n:abs

n:inc

  Data:  n-m
  Addr:  -
  Float: -

Increment n by one.

Class: class:word | Namespace: n | Interface Layer: all

Example #1:

    #100 n:inc

n:negative?

  Data:  n-f
  Addr:  -
  Float: -

Return `TRUE` if number is negative, or `FALSE` if not.

Class: class:word | Namespace: n | Interface Layer: all

n:zero?

  Data:  n-f
  Addr:  -
  Float: -

Return `TRUE` if number is zero, or `FALSE` otherwise.

Class: class:word | Namespace: n | Interface Layer: all

s:const

  Data:  ss-
  Addr:  -
  Float: -

Create a constant named s2, returning a pointer to s1. This will use `s:keep` to preserve the original string.

Class: class:word | Namespace: s | Interface Layer: all

s:empty

  Data:  -s
  Addr:  -
  Float: -

Return an empty string.

Class: class:word | Namespace: s | Interface Layer: all

s:for-each

  Data:  sq-
  Addr:  -
  Float: -

Execute the quote once for each value in the string.

Class: class:word | Namespace: s | Interface Layer: all

s:index/char

  Data:  sc-n
  Addr:  -
  Float: -

Return the location of the first instance of the specified character in the string.

Class: class:word | Namespace: s | Interface Layer: all

s:reverse

  Data:  s-s
  Addr:  -
  Float: -

Reverse the order of ASCII characters in a string.

Class: class:word | Namespace: s | Interface Layer: all

swap

  Data:  nm-mn
  Addr:  -
  Float: -

Exchange the position of the top two items on the stack

Class: class:primitive | Namespace: global | Interface Layer: all

times

  Data:  nq-
  Addr:  -
  Float: -

Run the specified quote the specified number of times.

Class: class:word | Namespace: global | Interface Layer: all

Example #1:

    #12 [ $- c:put ] times

until

  Data:  q(-f)-
  Addr:  -
  Float: -

Execute quote repeatedly while the quote returns a value of `FALSE`. The quote should return a flag of either `TRUE` or `FALSE`, though `until` will treat any non-zero value as `TRUE`.

Class: class:word | Namespace: global | Interface Layer: all

Example #1:

    #10 [ dup n:put nl n:dec dup n:zero? ] until

var

  Data:  s-
  Addr:  -
  Float: -

Create a variable. The variable is initialized to 0.

Class: class:word | Namespace: global | Interface Layer: all

Example #1:

    'Base var

var-n

  Data:  ns-
  Addr:  -
  Float: -

Create a variable with the specified initial value.

Class: class:word | Namespace: global | Interface Layer: all

Example #1:

    #10 'Base var-n

{{

  Data:  -
  Addr:  -
  Float: -

Begin a lexically scoped area.

Class: class:word | Namespace: global | Interface Layer: all

}}

  Data:  -
  Addr:  -
  Float: -

End a lexically scoped area. This will hide any headers between `{{` and `---reveal---`, leaving only headers between `---reveal---` and the `}}` visible.

Class: class:word | Namespace: global | Interface Layer: all

sigil:!

  Data:  ns-
  Addr:  -
  Float: -

Store a value into a variable.

Interpret Time:
  Store a value into the named variable.

Compile Time:
  Compile the code to store a value into a named variable.

Class: class:macro | Namespace: sigil | Interface Layer: all

sigil:#

  Data:  s-n
  Addr:  -
  Float: -

Process token as a number.

Interpret Time:
  Convert the string into a number and leave on the stack.

Compile Time:
  Convert the string into a number and compile into the current definition as a literal.

Class: class:macro | Namespace: sigil | Interface Layer: all

sigil:$

  Data:  s-c
  Addr:  -
  Float: -

Process token as an ASCII character.

Interpret Time:
  Fetch first character from string. Leave on stack.

Compile Time:
  Fetch first character from the string. Compile into the current definition as  literal.

Class: class:macro | Namespace: sigil | Interface Layer: all

sigil:&

  Data:  s-a
  Addr:  -
  Float: -

Return a pointer to a named item. If name is not found, returns 0.

Interpret Time:
  Lookup name in dictionary, return contents of the xt field on the stack.

Compile Time:
  Lookup name in dictionary, compile code to push the contents of the xt field into the current definition.

Class: class:macro | Namespace: sigil | Interface Layer: all

sigil:'

  Data:  s-s
  Addr:  -
  Float: -

Process token as a string.

Interpret Time:
  Move string into temporary buffer. If `RewriteUnderscores` is `TRUE`, replace all instances of _ with space.

Compile Time:
  Move string into temporary buffer. If `RewriteUnderscores` is `TRUE`, replace all instances of _ with space. Then compile the string into the current definition.

Class: class:macro | Namespace: sigil | Interface Layer: all

sigil:(

  Data:  s-
  Addr:  -
  Float: -

Process token as a comment.

Interpret Time:
  Discard the string.

Compile Time:
  Discard the string.

Class: class:macro | Namespace: sigil | Interface Layer: all

sigil::

  Data:  s-
  Addr:  -
  Float: -

Hook. Process token as a new definition.

Interpret Time:
  Create a header pointing to `here` with the provided string as the name. Sets class to `class:word`.

Class: class:macro | Namespace: sigil | Interface Layer: all

sigil:@

  Data:  s-n
  Addr:  -
  Float: -

Fetch from a stored variable.

Interpret Time:
  Fetch a value from a named variable.

Compile Time:
  Compile the code to fetch a value from a named variable into the current definition.

Class: class:macro | Namespace: sigil | Interface Layer: all