mirror/guile
mirror/guile
1
Fork 0
mirror of https://git.savannah.gnu.org/git/guile.git synced 2025-06-10 22:10:21 +02:00
Code Activity

*** empty log message ***

Browse source
This commit is contained in:
Mikael Djurfeldt 2000-03-12 18:41:47 +00:00
parent f12677062e
commit f8a72ca4c9
1 changed files with 17 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

17
NEWS
View file

@ -157,6 +157,23 @@ the readability of argument checking.
** All (nearly?) K&R prototypes for functions replaced with ANSI C equivalents.
** New macros: SCM_PACK, SCM_UNPACK, SCM_UNPACK_CAR
Compose/decompose an SCM value.
The SCM type is now defined as void * on most architectures. This
makes it easier to find several types of bugs, for example when SCM
values are treated as integers without conversion. Values of the SCM
type should be treated as "atomic" values. These macros are used when
composing/decomposing an SCM value, either because you want to access
individual bits, or because you want to treat it as an integer value.
E.g., in order to set bit 7 in an SCM value x, use the expression
SCM_PACK (SCM_UNPACK (x) | 0x80)
SCM_UNPACK_CAR (X) is defined as SCM_UNPACK (SCM_CAR (X))
** Port internals: the rw_random variable in the scm_port structure
must be set to non-zero in any random access port. In recent Guile
releases it was only set for bidirectional random-access ports.