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diff src/alloc.c @ 5736:3192994c49ca

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Convert C (un)signed long long values to bignums properly. This patch also does the following: - Uses make_fixnum instead of make_integer when the argument is guaranteed to be in the fixnum range. - Introduces make_unsigned_integer so that we handle unsigned values with the high bit set correctly. - Introduces conversions between bignums and (un)signed long long values. - Uses mp_set_memory_functions with the BSD MP code, if it exists. - Eliminates some unnecessary consing in the Lisp + and * implementations. - Fixes a problem with check_valid_xbm_inline(). This function is called during intialization. It calls Ftimes. When using pdump, this is a problem, because (a) the bignum code is not initialized until *after* dumping, so we don't try to dump any bignums, and (b) multiplication of integers is done inside bignums so we handle fixnum overflow correctly. I decided that an XBM file with dimensions that don't fit into fixnums is probably not something we want to try to handle anyway, and did the arithmetic with C values instead of Lisp values. Doing that broke one test, which started getting a different error message from the one it expected, so I adjusted the test to match the new reality. - Fixes a few miscellaneous bugs in the BSD MP code. See <CAHCOHQk0u0=eD1fUMHTNWi2Yh=1WgiYyCXdMbsGzHBNhdqYz4w@mail.gmail.com> in xemacs-patches, as well as followup messages.
author Jerry James <james@xemacs.org>
date Mon, 17 Jun 2013 10:23:00 -0600
parents 1a507c4c6c42
children 427a72c6ee17
line wrap: on
line diff
--- a/src/alloc.c	Wed Apr 24 20:16:14 2013 -0400
+++ b/src/alloc.c	Mon Jun 17 10:23:00 2013 -0600
@@ -1583,7 +1583,7 @@
   Lisp_Object val = Qnil;
   Elemcount size;
 
-  check_integer_range (length, Qzero, make_integer (MOST_POSITIVE_FIXNUM));
+  check_integer_range (length, Qzero, make_fixnum (MOST_POSITIVE_FIXNUM));
 
   size = XFIXNUM (length);
 
@@ -1644,6 +1644,45 @@
 /* WARNING: This function returns a bignum even if its argument fits into a
    fixnum.  See Fcanonicalize_number(). */
 Lisp_Object
+make_bignum_un (unsigned long bignum_value)
+{
+  Lisp_Bignum *b;
+
+  ALLOC_FROB_BLOCK_LISP_OBJECT (bignum, Lisp_Bignum, b, &lrecord_bignum);
+  bignum_init (bignum_data (b));
+  bignum_set_ulong (bignum_data (b), bignum_value);
+  return wrap_bignum (b);
+}
+
+/* WARNING: This function returns a bignum even if its argument fits into a
+   fixnum.  See Fcanonicalize_number(). */
+Lisp_Object
+make_bignum_ll (long long bignum_value)
+{
+  Lisp_Bignum *b;
+
+  ALLOC_FROB_BLOCK_LISP_OBJECT (bignum, Lisp_Bignum, b, &lrecord_bignum);
+  bignum_init (bignum_data (b));
+  bignum_set_llong (bignum_data (b), bignum_value);
+  return wrap_bignum (b);
+}
+
+/* WARNING: This function returns a bignum even if its argument fits into a
+   fixnum.  See Fcanonicalize_number(). */
+Lisp_Object
+make_bignum_ull (unsigned long long bignum_value)
+{
+  Lisp_Bignum *b;
+
+  ALLOC_FROB_BLOCK_LISP_OBJECT (bignum, Lisp_Bignum, b, &lrecord_bignum);
+  bignum_init (bignum_data (b));
+  bignum_set_ullong (bignum_data (b), bignum_value);
+  return wrap_bignum (b);
+}
+
+/* WARNING: This function returns a bignum even if its argument fits into a
+   fixnum.  See Fcanonicalize_number(). */
+Lisp_Object
 make_bignum_bg (bignum bg)
 {
   Lisp_Bignum *b;