ffi: new buf-carray function.

* ffi.c (buf_carray): New function.
(ffi_init): Registered buf-carray intrinsic.

* ffi.c (buf_carray): Declared.

* txr.1: Documented.

1 files changed, 9 insertions, 0 deletions

diff --git a/ffi.c b/ffi.c
index 625545bb..b6eed992 100644
--- a/ffi.c
+++ b/ffi.c
@@ -4838,6 +4838,14 @@ val carray_buf_sync(val carray)
   return buf;
 }
 
+val buf_carray(val carray)
+{
+  struct carray *scry = carray_struct_checked(carray);
+  struct txr_ffi_type *etft = scry->eltft;
+  cnum bytes = scry->nelem * etft->size;
+  return  make_duplicate_buf(num(bytes), scry->data);
+}
+
 val carray_cptr(val cptr, val type, val len)
 {
   mem_t *data = cptr_get(cptr);
@@ -5580,6 +5588,7 @@ void ffi_init(void)
   reg_fun(intern(lit("carray-blank"), user_package), func_n2(carray_blank));
   reg_fun(intern(lit("carray-buf"), user_package), func_n3o(carray_buf, 2));
   reg_fun(intern(lit("carray-buf-sync"), user_package), func_n1(carray_buf_sync));
+  reg_fun(intern(lit("buf-carray"), user_package), func_n1(buf_carray));
   reg_fun(intern(lit("carray-cptr"), user_package), func_n3o(carray_cptr, 2));
   reg_fun(intern(lit("vec-carray"), user_package), func_n2o(vec_carray, 1));
   reg_fun(intern(lit("list-carray"), user_package), func_n2o(list_carray, 1));