annotate 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
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1 /* m- file for Mips machines.
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2 Copyright (C) 1987, 1992 Free Software Foundation, Inc.
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3
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4 This file is part of GNU Emacs.
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5
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6 GNU Emacs is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 GNU Emacs is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.31. */
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22
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23 /* The following line tells the configuration script what sort of
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24 operating system this machine is likely to run.
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25 USUAL-OPSYS="note"
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26
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27 NOTE-START
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28 Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
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29 Note that the proper m- file for the Decstation is m-pmax.h.
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30 NOTE-END */
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31
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32 /* Now define a symbol for the cpu type, if your compiler
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33 does not define it automatically:
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34 Ones defined so far include vax, m68000, ns16000, pyramid,
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35 orion, tahoe, APOLLO and many others */
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36 #ifndef mips
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37 # define mips
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38 #endif
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39
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40 /* Data type of load average, as read out of kmem. */
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41
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42 #define LOAD_AVE_TYPE long
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43
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44 /* Convert that into an integer that is 100 for a load average of 1.0 */
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45
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46 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / 256.0)
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47
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48 #ifndef linux
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49 /* CDC EP/IX 1.4.3 uses /unix */
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50
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51 #undef KERNEL_FILE
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52 #define KERNEL_FILE "/unix"
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53 #endif /* ! linux */
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54
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55 /* Define NO_REMAP if memory segmentation makes it not work well
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56 to change the boundary between the text section and data section
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57 when Emacs is dumped. If you define this, the preloaded Lisp
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58 code will not be sharable; but that's better than failing completely. */
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59
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60 #define NO_REMAP
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61
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62 /* This machine requires completely different unexec code
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63 which lives in a separate file. Specify the file name. */
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64
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65 #ifndef linux
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66 #define UNEXEC "unexmips.o"
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67 #endif /* !linux */
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68 /* Describe layout of the address space in an executing process. */
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69
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70 #ifdef linux
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71 #define TEXT_START 0x00400000
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72 #define DATA_START 0x10000000
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73 #else /* !linux */
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74 #define TEXT_START 0x400000
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75 #define DATA_START 0x800000
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76 #endif /* linux */
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77
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78 /* Alter some of the options used when linking. */
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79
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80 #if !defined(NEWSOS5) && !defined(linux)
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81 #ifdef BSD
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82
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83 /* DECstations don't have this library. */
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84 /* #define LIBS_MACHINE "-lmld" */
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85
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86 #define LD_SWITCH_MACHINE "-D 800000"
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87 #define LIBS_DEBUG
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88
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89 #define LINKER "/bsd43/bin/ld"
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90
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91 #else /* not BSD */
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92
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93 #undef LIBS_MACHINE
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94 #define LD_SWITCH_MACHINE "-D 800000 -g3"
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95 #define START_FILES "pre-crt0.o /usr/lib/crt1.o"
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96 #define LIB_STANDARD "-lbsd -lc /usr/lib/crtn.o"
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97 #define LIBS_TERMCAP "-lcurses"
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98
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99 #define C_SWITCH_MACHINE "-I/usr/include/bsd"
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100 #define C_DEBUG_SWITCH "-O -g3"
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101
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102 #endif /* not BSD */
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103 #endif /* !NEWSOS5 && !linux */
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104
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105 #if !defined(NEWSOS5) && !defined(linux)
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106 #ifdef USG
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107
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108 /* Don't try to use SIGIO even though it is defined. */
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109 #define BROKEN_SIGIO
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110
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111 /* Describe special kernel features. */
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112
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113 #if defined(emacs) && !defined(INHIBIT_BSD_TIME)
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114 #include <bsd/sys/time.h>
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115 #endif
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116
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117 /* The `select' in the system won't work for pipes, so don't use it. */
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118 #undef HAVE_SELECT /* override configuration decision */
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119
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120 /* ??? */
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121 #define IRIS
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122
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123 #endif /* USG */
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124
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125 #ifdef BSD
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126 #define COFF
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127 #define TERMINFO
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128 #undef MAIL_USE_FLOCK /* Someone should check this. */
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129 #endif /* BSD */
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130 #endif /* !NEWSOS5 && !linux */