iskm/learnxinyminutes-docs
1
0
Fork 0
mirror of https://github.com/adambard/learnxinyminutes-docs.git synced 2024-12-23 17:41:41 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Capitalize instances of 'forth'.

Browse Source
This commit is contained in:
HorseMD 2014-11-13 22:51:40 +00:00
parent 70b03c1868
commit 4d80a56d2c
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
forth.html.markdown
View File

@ -20,7 +20,7 @@ Forth, but most of what is written here should work elsewhere.
\ --------------------------------- Precursor ----------------------------------
\ It's important to know how forth processes instructions. All
\ It's important to know how Forth processes instructions. All
\ programming in Forth is done by manipulating what's known as the parameter
\ stack (more commonly just referred to as "the stack"). Typing:
5 2 3 56 76 23 65
@ -69,8 +69,8 @@ Forth, but most of what is written here should work elsewhere.
\ Quite often one will want to write their own words.
: square ( n -- n ) dup * ; \ ok
\ The `:` word sets forth into compile mode. `(` and `)` are both words which
\ tell forth to ignore between them. Up until the `;` word is what our word
\ The `:` word sets Forth into compile mode. `(` and `)` are both words which
\ tell Forth to ignore between them. Up until the `;` word is what our word
\ does.
\ We can check the definition of a word with the `see` word:
@ -78,7 +78,7 @@ see square \ dup * ; ok
\ -------------------------------- Conditionals --------------------------------
\ In forth, -1 is used to represent truth, and 0 is used to represent false.
\ In Forth, -1 is used to represent truth, and 0 is used to represent false.
\ The idea is that -1 is 11111111 in binary, whereas 0 is obviously 0 in binary.
\ However, any non-zero value is usually treated as being true:
42 42 = / -1 ok
@ -184,13 +184,13 @@ create mynumbers 64 , 9001 , 1337 , \ the last `,` is important!
\ As well as reading, we can add to the return stack and remove from it:
5 6 4 >r swap r> .s \ 6 5 4
\ NOTE: Because forth uses the return stack for word pointers, it's essential
\ NOTE: Because Forth uses the return stack for word pointers, it's essential
\ that you set the return stack back to how it was at the end of your
\ definition. `>r` should always be followed by `r>`.
\ ------------------------- Floating Point Operations --------------------------
\ Most forths tend to dislike the use of floating point operations. We write
\ Most Forths tend to dislike the use of floating point operations. We write
\ floating point operations with scientific notation.
8.3e 0.8e f+ f. \ 9.1 ok