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author | Ludovic Courtès <ludo@gnu.org> | 2010-07-26 19:36:03 +0200 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2010-07-26 19:38:52 +0200 |
commit | 17fc9efecbc9cb0c7e32664dbd0e2c863194cd7f (patch) | |
tree | e03ebbd3ab93aa697aec9abc72444f20edae0a1b /libguile/foreign.c | |
parent | d4149a510e4a87915b625255f4de3301510d810c (diff) | |
download | guile-17fc9efecbc9cb0c7e32664dbd0e2c863194cd7f.tar.gz |
Add `dereference-pointer' to `(system foreign)'.
* libguile/foreign.c (scm_dereference_pointer): New function.
* libguile/foreign.h (scm_dereference_pointer): New declaration.
* module/system/foreign.scm (dereference-pointer): Likewise.
* test-suite/tests/foreign.test
("foreign<->bytevector")["dereference-pointer"]: New test.
Diffstat (limited to 'libguile/foreign.c')
-rw-r--r-- | libguile/foreign.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/libguile/foreign.c b/libguile/foreign.c index dc9367614..dd77a823c 100644 --- a/libguile/foreign.c +++ b/libguile/foreign.c @@ -162,6 +162,19 @@ SCM_DEFINE (scm_foreign_address, "foreign-address", 1, 0, 0, } #undef FUNC_NAME +SCM_DEFINE (scm_dereference_pointer, "dereference-pointer", 1, 0, 0, + (SCM foreign), + "Return the a foreign object representing the pointer " + "pointed to by @var{foreign}.") +#define FUNC_NAME s_scm_dereference_pointer +{ + SCM_VALIDATE_FOREIGN (1, foreign); + + return scm_take_foreign_pointer (* (void **) SCM_FOREIGN_POINTER (foreign), + NULL); +} +#undef FUNC_NAME + SCM_DEFINE (scm_foreign_to_bytevector, "foreign->bytevector", 2, 2, 0, (SCM foreign, SCM len, SCM offset, SCM uvec_type), "Return a bytevector aliasing the memory pointed to by\n" |