From 0069c0b05d810c001c1ab9947b1f8f333caede14 Mon Sep 17 00:00:00 2001
From: Kaz Kylheku <kaz@kylheku.com>
Date: Fri, 20 May 2022 00:37:38 -0700
Subject: ffi: new pack type operator; align increases only.

* ffi.c (pack_s): New symbol variable.
(ffi_type_compile): Handle new pack type operator together with
align. Allow a one-argument form of align and pack in which
the value is defaulted.  The behavior of align changes: align
can only increase alignment now, never decrease, so for
instance (align 1 ...) does nothing. pack must be used to
decrease alignment. Furthermore, for certain argument types,
pack performs transformations of the type syntax, rather than
compiling the argument type and producing a variant of it with
altered alignment.

* txr.1: Documented.

* stdlib/doc-syms.tl: Updated.
---
 stdlib/doc-syms.tl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'stdlib')

diff --git a/stdlib/doc-syms.tl b/stdlib/doc-syms.tl
index 037675db..7301068a 100644
--- a/stdlib/doc-syms.tl
+++ b/stdlib/doc-syms.tl
@@ -100,7 +100,7 @@
       ("ai-passive" "N-020DFFDE")
       ("ai-v4mapped" "N-020DFFDE")
       ("alet" "N-008215E0")
-      ("align" "N-01C7BC08")
+      ("align" "N-00093D01")
       ("alignof" "N-000F730E")
       ("alist-nremove" "N-000CD07F")
       ("alist-remove" "N-001A53C4")
@@ -1398,6 +1398,7 @@
       ("ors" "N-02D33A3D")
       ("oust" "N-0126D3FF")
       ("output" "N-0159EBE7")
+      ("pack" "N-00093D01")
       ("package-alist" "N-017F684C")
       ("package-fallback-list" "N-027A535C")
       ("package-foreign-symbols" "N-030C06F5")
-- 
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