annotate src/number.h @ 5420:b9167d522a9a

Rebase with 21.5 trunk.
author Mats Lidell <matsl@xemacs.org>
date Thu, 28 Oct 2010 23:53:24 +0200
parents 2aa9cd456ae7 7e535575bf6d
children 8d29f1c4bb98
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1 /* Definitions of numeric types for XEmacs.
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2 Copyright (C) 2004 Jerry James.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software: you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation, either version 3 of the License, or (at your
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9 option) any later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 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. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 /* Synched up with: Not in FSF. */
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20
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21 #ifndef INCLUDED_number_h_
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22 #define INCLUDED_number_h_
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23
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24 /* The following types are always defined in the same manner:
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25 fixnum = whatever fits in the Lisp_Object type
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26 integer = union (fixnum, bignum)
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27 rational = union (integer, ratio)
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28 float = C double
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29 floating = union(float, bigfloat) Anybody got a better name?
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30 real = union (rational, floating)
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31 number = real (should be union(real, complex) but no complex yet)
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32
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33 It is up to the library-specific code to define the remaining types,
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34 namely: bignum, ratio, and bigfloat. Not all of these types may be
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35 available. The top-level configure script should define the symbols
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36 HAVE_BIGNUM, HAVE_RATIO, and HAVE_BIGFLOAT to indicate which it provides.
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37 If some type is not defined by the library, this is what happens:
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38
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39 - bignum: bignump(x) is false for all x; any attempt to create a bignum
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40 causes an error to be raised.
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41
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42 - ratio: we define our own structure consisting of two Lisp_Objects, which
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43 are presumed to be integers (i.e., either fixnums or bignums). We do our
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44 own GCD calculation, which is bound to be slow, to keep the ratios
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45 reduced to canonical form. (FIXME: Not yet implemented.)
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46
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47 - bigfloat: bigfloat(x) is false for all x; any attempt to create a
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48 bigfloat causes an error to be raised.
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49
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50 We (provide) the following symbols, so that Lisp code has some hope of
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51 using this correctly:
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52
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53 - (provide 'bignum) if HAVE_BIGNUM
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54 - (provde 'ratio) if HAVE_RATIO
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55 - (provide 'bigfloat) if HAVE_BIGFLOAT
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56 */
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57
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58 /* Load the library definitions */
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59 #ifdef WITH_GMP
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60 #include "number-gmp.h"
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61 #endif
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62 #ifdef WITH_MP
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63 #include "number-mp.h"
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64 #endif
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65
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66
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67 /********************************* Bignums **********************************/
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68 #ifdef HAVE_BIGNUM
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69
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70 struct Lisp_Bignum
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71 {
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72 FROB_BLOCK_LISP_OBJECT_HEADER lheader;
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73 bignum data;
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74 };
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75 typedef struct Lisp_Bignum Lisp_Bignum;
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76
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77 DECLARE_LISP_OBJECT (bignum, Lisp_Bignum);
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78 #define XBIGNUM(x) XRECORD (x, bignum, Lisp_Bignum)
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79 #define wrap_bignum(p) wrap_record (p, bignum)
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80 #define BIGNUMP(x) RECORDP (x, bignum)
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81 #define CHECK_BIGNUM(x) CHECK_RECORD (x, bignum)
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82 #define CONCHECK_BIGNUM(x) CONCHECK_RECORD (x, bignum)
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83
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84 #define bignum_data(b) (b)->data
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85 #define XBIGNUM_DATA(x) bignum_data (XBIGNUM (x))
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86
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87 #define BIGNUM_ARITH_RETURN(b,op) do \
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88 { \
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89 Lisp_Object retval = make_bignum (0); \
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90 bignum_##op (XBIGNUM_DATA (retval), XBIGNUM_DATA (b)); \
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91 return Fcanonicalize_number (retval); \
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92 } while (0)
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93
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94 #define BIGNUM_ARITH_RETURN1(b,op,arg) do \
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95 { \
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96 Lisp_Object retval = make_bignum(0); \
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97 bignum_##op (XBIGNUM_DATA (retval), XBIGNUM_DATA (b), arg); \
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98 return Fcanonicalize_number (retval); \
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99 } while (0)
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100
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101 #if SIZEOF_EMACS_INT == SIZEOF_LONG
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102 # define bignum_fits_emacs_int_p(b) bignum_fits_long_p(b)
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103 # define bignum_to_emacs_int(b) bignum_to_long(b)
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104 #elif SIZEOF_EMACS_INT == SIZEOF_INT
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105 # define bignum_fits_emacs_int_p(b) bignum_fits_int_p(b)
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106 # define bignum_to_emacs_int(b) bignum_to_int(b)
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107 #else
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108 # error Bignums currently do not work with long long Emacs integers.
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109 #endif
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110
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111 extern Lisp_Object make_bignum (long);
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112 extern Lisp_Object make_bignum_bg (bignum);
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113 extern bignum scratch_bignum, scratch_bignum2;
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114
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115 #else /* !HAVE_BIGNUM */
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116
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117 #define BIGNUMP(x) 0
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118 #define CHECK_BIGNUM(x) dead_wrong_type_argument (Qbignump, x)
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119 #define CONCHECK_BIGNUM(x) dead_wrong_type_argument (Qbignump, x)
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120 typedef void bignum;
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121 #define make_bignum(l) This XEmacs does not support bignums
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122 #define make_bignum_bg(b) This XEmacs does not support bignums
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123
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124 #endif /* HAVE_BIGNUM */
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125
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126 extern Lisp_Object Qbignump;
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127 EXFUN (Fbignump, 1);
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128
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129
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130 /********************************* Integers *********************************/
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131 /* Qintegerp in lisp.h */
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132 #define INTEGERP(x) (INTP(x) || BIGNUMP(x))
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133 #define CHECK_INTEGER(x) do { \
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134 if (!INTEGERP (x)) \
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135 dead_wrong_type_argument (Qintegerp, x); \
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136 } while (0)
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137 #define CONCHECK_INTEGER(x) do { \
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138 if (!INTEGERP (x)) \
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139 x = wrong_type_argument (Qintegerp, x); \
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140 } while (0)
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141
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142 #ifdef HAVE_BIGNUM
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143 #define make_integer(x) \
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144 (NUMBER_FITS_IN_AN_EMACS_INT (x) ? make_int (x) : make_bignum (x))
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145 #else
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146 #define make_integer(x) make_int (x)
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147 #endif
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148
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149 extern Fixnum Vmost_negative_fixnum, Vmost_positive_fixnum;
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150 EXFUN (Fintegerp, 1);
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151 EXFUN (Fevenp, 1);
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152 EXFUN (Foddp, 1);
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153
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154
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155 /********************************** Ratios **********************************/
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156 #ifdef HAVE_RATIO
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157
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158 struct Lisp_Ratio
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159 {
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160 FROB_BLOCK_LISP_OBJECT_HEADER lheader;
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161 ratio data;
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162 };
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163 typedef struct Lisp_Ratio Lisp_Ratio;
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164
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165 DECLARE_LISP_OBJECT (ratio, Lisp_Ratio);
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166 #define XRATIO(x) XRECORD (x, ratio, Lisp_Ratio)
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167 #define wrap_ratio(p) wrap_record (p, ratio)
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168 #define RATIOP(x) RECORDP (x, ratio)
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169 #define CHECK_RATIO(x) CHECK_RECORD (x, ratio)
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170 #define CONCHECK_RATIO(x) CONCHECK_RECORD (x, ratio)
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171
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172 #define ratio_data(r) (r)->data
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173
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174 #define XRATIO_DATA(r) ratio_data (XRATIO (r))
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175 #define XRATIO_NUMERATOR(r) ratio_numerator (XRATIO_DATA (r))
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176 #define XRATIO_DENOMINATOR(r) ratio_denominator (XRATIO_DATA (r))
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177
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178 #define RATIO_ARITH_RETURN(r,op) do \
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179 { \
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180 Lisp_Object retval = make_ratio (0L, 1UL); \
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181 ratio_##op (XRATIO_DATA (retval), XRATIO_DATA (r)); \
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182 return Fcanonicalize_number (retval); \
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183 } while (0)
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184
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185 #define RATIO_ARITH_RETURN1(r,op,arg) do \
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186 { \
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187 Lisp_Object retval = make_ratio (0L, 1UL); \
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188 ratio_##op (XRATIO_DATA (retval), XRATIO_DATA (r), arg); \
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189 return Fcanonicalize_number (retval); \
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190 } while (0)
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191
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192 extern Lisp_Object make_ratio (long, unsigned long);
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193 extern Lisp_Object make_ratio_bg (bignum, bignum);
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194 extern Lisp_Object make_ratio_rt (ratio);
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195 extern ratio scratch_ratio, scratch_ratio2;
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196
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197 #else /* !HAVE_RATIO */
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198
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199 #define RATIOP(x) 0
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200 #define CHECK_RATIO(x) dead_wrong_type_argument (Qratiop, x)
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201 #define CONCHECK_RATIO(x) dead_wrong_type_argument (Qratiop, x)
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202 typedef void ratio;
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203 #define make_ratio(n,d) This XEmacs does not support ratios
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204 #define make_ratio_bg(n,d) This XEmacs does not support ratios
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205
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206 #endif /* HAVE_RATIO */
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207
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208 extern Lisp_Object Qratiop;
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209 EXFUN (Fratiop, 1);
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210
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211
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212 /******************************** Rationals *********************************/
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213 extern Lisp_Object Qrationalp;
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214
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215 #define RATIONALP(x) (INTEGERP(x) || RATIOP(x))
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216 #define CHECK_RATIONAL(x) do { \
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217 if (!RATIONALP (x)) \
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218 dead_wrong_type_argument (Qrationalp, x); \
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219 } while (0)
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220 #define CONCHECK_RATIONAL(x) do { \
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221 if (!RATIONALP (x)) \
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222 x = wrong_type_argument (Qrationalp, x); \
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223 } while (0)
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224
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225 EXFUN (Frationalp, 1);
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226 EXFUN (Fnumerator, 1);
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227 EXFUN (Fdenominator, 1);
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228
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229
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230 /******************************** Bigfloats *********************************/
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231 #ifdef HAVE_BIGFLOAT
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232 struct Lisp_Bigfloat
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233 {
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234 FROB_BLOCK_LISP_OBJECT_HEADER lheader;
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235 bigfloat bf;
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236 };
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237 typedef struct Lisp_Bigfloat Lisp_Bigfloat;
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238
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239 DECLARE_LISP_OBJECT (bigfloat, Lisp_Bigfloat);
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240 #define XBIGFLOAT(x) XRECORD (x, bigfloat, Lisp_Bigfloat)
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241 #define wrap_bigfloat(p) wrap_record (p, bigfloat)
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242 #define BIGFLOATP(x) RECORDP (x, bigfloat)
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243 #define CHECK_BIGFLOAT(x) CHECK_RECORD (x, bigfloat)
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244 #define CONCHECK_BIGFLOAT(x) CONCHECK_RECORD (x, bigfloat)
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245
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246 #define bigfloat_data(f) ((f)->bf)
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247 #define XBIGFLOAT_DATA(x) bigfloat_data (XBIGFLOAT (x))
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248 #define XBIGFLOAT_GET_PREC(x) bigfloat_get_prec (XBIGFLOAT_DATA (x))
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249 #define XBIGFLOAT_SET_PREC(x,p) bigfloat_set_prec (XBIGFLOAT_DATA (x), p)
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250
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251 #define BIGFLOAT_ARITH_RETURN(f,op) do \
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252 { \
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253 Lisp_Object retval = make_bigfloat (0.0, bigfloat_get_default_prec()); \
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254 bigfloat_##op (XBIGFLOAT_DATA (retval), XBIGFLOAT_DATA (f)); \
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255 return retval; \
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256 } while (0)
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257
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258 #define BIGFLOAT_ARITH_RETURN1(f,op,arg) do \
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259 { \
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260 Lisp_Object retval = make_bigfloat (0.0, bigfloat_get_default_prec()); \
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261 bigfloat_##op (XBIGFLOAT_DATA (retval), XBIGFLOAT_DATA (f), arg); \
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262 return retval; \
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263 } while (0)
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264
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265 extern Lisp_Object make_bigfloat (double, unsigned long);
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266 extern Lisp_Object make_bigfloat_bf (bigfloat);
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267 extern Lisp_Object Vdefault_float_precision;
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268 extern bigfloat scratch_bigfloat, scratch_bigfloat2;
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269
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270 #else /* !HAVE_BIGFLOAT */
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271
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272 #define BIGFLOATP(x) 0
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273 #define CHECK_BIGFLOAT(x) dead_wrong_type_argument (Qbigfloatp, x)
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274 #define CONCHECK_BIGFLOAT(x) dead_wrong_type_argument (Qbigfloatp, x)
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275 typedef void bigfloat;
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276 #define make_bigfloat(f) This XEmacs does not support bigfloats
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277 #define make_bigfloat_bf(f) This XEmacs does not support bigfloast
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278
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279 #endif /* HAVE_BIGFLOAT */
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280
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281 extern Lisp_Object Qbigfloatp;
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282 EXFUN (Fbigfloatp, 1);
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283
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284 /********************************* Floating *********************************/
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285 extern Lisp_Object Qfloatingp;
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286 extern Lisp_Object Qread_default_float_format, Vread_default_float_format;
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287
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288 #define FLOATINGP(x) (FLOATP (x) || BIGFLOATP (x))
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289 #define CHECK_FLOATING(x) do { \
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290 if (!FLOATINGP (x)) \
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291 dead_wrong_type_argument (Qfloatingp, x); \
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292 } while (0)
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293 #define CONCHECK_FLOATING(x) do { \
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294 if (!FLOATINGP (x)) \
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295 x = wrong_type_argument (Qfloating, x); \
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296 } while (0)
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297
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298 extern Lisp_Object make_floating (double);
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299 EXFUN (Ffloatp, 1);
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300
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301
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302 /********************************** Reals ***********************************/
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303 extern Lisp_Object Qrealp;
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304
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305 #define REALP(x) (RATIONALP (x) || FLOATINGP (x))
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306 #define CHECK_REAL(x) do { \
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307 if (!REALP (x)) \
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308 dead_wrong_type_argument (Qrealp, x); \
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309 } while (0)
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310 #define CONCHECK_REAL(x) do { \
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311 if (!REALP (x)) \
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312 x = wrong_type_argument (Qrealp, x); \
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313 } while (0)
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314
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315 EXFUN (Frealp, 1);
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316
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317
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318 /********************************* Numbers **********************************/
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319 /* Qnumberp in lisp.h */
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320 #define NUMBERP(x) REALP (x)
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321 #define CHECK_NUMBER(x) do { \
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322 if (!NUMBERP (x)) \
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323 dead_wrong_type_argument (Qnumberp, x); \
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324 } while (0)
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325 #define CONCHECK_NUMBER(x) do { \
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326 if (!NUMBERP (x)) \
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327 x = wrong_type_argument (Qnumberp, x); \
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328 } while (0)
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329
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330 EXFUN (Fcanonicalize_number, 1);
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331
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332 enum number_type {FIXNUM_T, BIGNUM_T, RATIO_T, FLOAT_T, BIGFLOAT_T};
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333
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334 extern enum number_type get_number_type (Lisp_Object);
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335 extern enum number_type promote_args (Lisp_Object *, Lisp_Object *);
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336
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337 #ifdef WITH_NUMBER_TYPES
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338 DECLARE_INLINE_HEADER (
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339 int
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340 non_fixnum_number_p (Lisp_Object object))
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341 {
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342 if (LRECORDP (object))
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343 {
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344 switch (XRECORD_LHEADER (object)->type)
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345 {
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346 case lrecord_type_float:
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347 #ifdef HAVE_BIGNUM
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348 case lrecord_type_bignum:
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349 #endif
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350 #ifdef HAVE_RATIO
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351 case lrecord_type_ratio:
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352 #endif
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353 #ifdef HAVE_BIGFLOAT
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354 case lrecord_type_bigfloat:
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355 #endif
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356 return 1;
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357 }
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358 }
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359 return 0;
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360 }
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361 #define NON_FIXNUM_NUMBER_P(X) non_fixnum_number_p (X)
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362
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363 #else
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364 #define NON_FIXNUM_NUMBER_P FLOATP
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365 #endif
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366
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367
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368 #endif /* INCLUDED_number_h_ */