view src/m/mips.h @ 4678:b5e1d4f6b66f

Make #'floor, #'ceiling, #'round, #'truncate conform to Common Lisp. lisp/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * cl-extra.el (ceiling*, floor*, round*, truncate*): Implement these in terms of the C functions; mark them as obsolete. (mod*, rem*): Use #'nth-value with the C functions, not #'nth with the CL emulation functions. man/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * lispref/numbers.texi (Bigfloat Basics): Correct this documentation (ignoring for the moment that it breaks off in mid-sentence). tests/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * automated/lisp-tests.el: Test the new Common Lisp-compatible rounding functions available in C. (generate-rounding-output): Provide a function useful for generating the data for the rounding functions tests. src/ChangeLog addition: 2009-08-11 Aidan Kehoe <kehoea@parhasard.net> * floatfns.c (ROUNDING_CONVERT, CONVERT_WITH_NUMBER_TYPES) (CONVERT_WITHOUT_NUMBER_TYPES, MAYBE_TWO_ARGS_BIGNUM) (MAYBE_ONE_ARG_BIGNUM, MAYBE_TWO_ARGS_RATIO) (MAYBE_ONE_ARG_RATIO, MAYBE_TWO_ARGS_BIGFLOAT) (MAYBE_ONE_ARG_BIGFLOAT, MAYBE_EFF, MAYBE_CHAR_OR_MARKER): New macros, used in the implementation of the rounding functions. (ceiling_two_fixnum, ceiling_two_bignum, ceiling_two_ratio) (ceiling_two_bigfloat, ceiling_one_ratio, ceiling_one_bigfloat) (ceiling_two_float, ceiling_one_float, ceiling_one_mundane_arg) (floor_two_fixnum, floor_two_bignum, floor_two_ratio) (floor_two_bigfloat, floor_one_ratio, floor_one_bigfloat) (floor_two_float, floor_one_mundane_arg, round_two_fixnum) (round_two_bignum_1, round_two_bignum, round_two_ratio) (round_one_bigfloat_1, round_two_bigfloat, round_one_ratio) (round_one_bigfloat, round_two_float, round_one_float) (round_one_mundane_arg, truncate_two_fixnum) (truncate_two_bignum, truncate_two_ratio, truncate_two_bigfloat) (truncate_one_ratio, truncate_one_bigfloat, truncate_two_float) (truncate_one_float, truncate_one_mundane_arg): New functions, used in the implementation of the rounding functions. (Fceiling, Ffloor, Fround, Ftruncate, Ffceiling, Fffloor) (Ffround, Fftruncate): Revise to fully support Common Lisp conventions. This means: -- All functions have optional DIVISOR arguments -- All functions return multiple values; see #'values -- All functions do their arithmetic with the correct number types according to the contamination rules. -- #'round and #'fround always round towards the even number in ambiguous cases. * doprnt.c (emacs_doprnt_1): * number.c (internal_coerce_number): Call Ftruncate with two arguments, not one. * floatfns.c (Ffloat): Correct this, if NUMBER is a bignum. * lisp.h: Declare Ftruncate as taking two arguments. * number.c: Provide scratch_ratio2, init it appropriately. * number.h: Make scratch_ratio2 available. * number.h (BIGFLOAT_ARITH_RETURN): * number.h (BIGFLOAT_ARITH_RETURN1): Correct these functions.
author Aidan Kehoe <kehoea@parhasard.net>
date Tue, 11 Aug 2009 17:59:23 +0100
parents ecf1ebac70d8
children aa5ed11f473b
line wrap: on
line source

/* m- file for Mips machines.
   Copyright (C) 1987, 1992 Free Software Foundation, Inc.

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

/* Synched up with: FSF 19.31. */

/* The following line tells the configuration script what sort of 
   operating system this machine is likely to run.
   USUAL-OPSYS="note"

NOTE-START
Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
Note that the proper m- file for the Decstation is m-pmax.h.
NOTE-END  */

/* Now define a symbol for the cpu type, if your compiler
   does not define it automatically:
   Ones defined so far include vax, m68000, ns16000, pyramid,
   orion, tahoe, APOLLO and many others */
#ifndef mips
#	define mips
#endif

/* Data type of load average, as read out of kmem.  */

#define LOAD_AVE_TYPE long

/* Convert that into an integer that is 100 for a load average of 1.0  */

#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)

#ifndef linux
/* CDC EP/IX 1.4.3 uses /unix */

#undef KERNEL_FILE
#define KERNEL_FILE "/unix"
#endif /* ! linux */

/* Define NO_REMAP if memory segmentation makes it not work well
   to change the boundary between the text section and data section
   when Emacs is dumped.  If you define this, the preloaded Lisp
   code will not be sharable; but that's better than failing completely.  */

#define NO_REMAP

/* This machine requires completely different unexec code
   which lives in a separate file.  Specify the file name.  */

#ifndef linux
#define UNEXEC "unexmips.o"
#endif /* !linux */
/* Describe layout of the address space in an executing process.  */

#ifdef linux
#define TEXT_START      0x00400000
#define DATA_START      0x10000000
#else /* !linux */
#define TEXT_START 0x400000
#define DATA_START 0x800000
#endif /* linux */

/* Alter some of the options used when linking.  */

#if !defined(NEWSOS5) && !defined(linux)
#ifdef BSD

/* DECstations don't have this library. */
/* #define LIBS_MACHINE "-lmld"  */

#define LD_SWITCH_MACHINE "-D 800000"
#define LIBS_DEBUG

#define LINKER "/bsd43/bin/ld"
  
#else /* not BSD */

#undef LIBS_MACHINE
#define LD_SWITCH_MACHINE "-D 800000 -g3"
#define START_FILES "pre-crt0.o /usr/lib/crt1.o"
#define LIB_STANDARD "-lbsd -lc /usr/lib/crtn.o"
#define LIBS_TERMCAP "-lcurses"

#define C_SWITCH_MACHINE "-I/usr/include/bsd"
#define C_DEBUG_SWITCH "-O -g3"

#endif /* not BSD */
#endif /* !NEWSOS5 && !linux */

#if !defined(NEWSOS5) && !defined(linux)
#ifdef USG

/* Don't try to use SIGIO even though it is defined.  */
#define BROKEN_SIGIO

/* Describe special kernel features.  */

#if defined(emacs) && !defined(INHIBIT_BSD_TIME)
#include <bsd/sys/time.h>
#endif

/* The `select' in the system won't work for pipes, so don't use it.  */
#undef HAVE_SELECT /* override configuration decision */

/* ??? */
#define IRIS

#endif /* USG */

#ifdef BSD
#define COFF
#define TERMINFO
#undef MAIL_USE_FLOCK  /* Someone should check this.  */
#endif /* BSD */
#endif /* !NEWSOS5 && !linux */