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ffi/unsafe docs: clarify C->Racket transtion for _[std]bool

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Closes #1817
This commit is contained in:
Matthew Flatt 2018-06-20 18:25:25 -06:00
parent 6ec6b39827
commit 61f59a2476
1 changed files with 7 additions and 6 deletions
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13
pkgs/racket-doc/scribblings/foreign/types.scrbl
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@ -249,17 +249,18 @@ values.}
@defthing[_stdbool ctype?]{
The @racket[_stdbool] type represents the C99 @cpp{bool} type from
@cpp{<stdbool.h>}. It translates @racket[#f] to a @racket[0]
@cpp{bool} and any other value to a @racket[1] @cpp{bool}.
@cpp{<stdbool.h>}. Going from Racket to C, @racket[_stdbool] translates
@racket[#f] to a @racket[0] @cpp{bool} and any other value to a
@racket[1] @cpp{bool}. Going from C to Racket, @racket[_stdbool] translates
@racket[0] to a @racket[#f] and any other value to @racket[#t].
@history[#:added "6.0.0.6"]}
@defthing[_bool ctype?]{
Translates @racket[#f] to a @racket[0] @cpp{int} and any other
value to a @racket[1] @cpp{int}, reflecting one of many
traditional (i.e., pre-C99) encodings of booleans. See also
@racket[_stdbool].}
Like @racket[_stdbool], but with an @cpp{int} representation on the C
side, reflecting one of many traditional (i.e., pre-C99) encodings of
booleans.}
@defthing[_void ctype?]{