Mercurial > hg > octave-nkf > gnulib-hg
annotate lib/c-strcaseeq.h @ 16040:b8acd8099b25
New module 'fmaf'.
* lib/math.in.h (fmaf): New declaration.
* lib/fmaf.c: New file.
* m4/fmaf.m4: New file.
* m4/math_h.m4 (gl_MATH_H): Test whethern fmaf is declared.
(gl_MATH_H_DEFAULTS): Initialize GNULIB_FMAF, HAVE_FMAF, REPLACE_FMAF.
* modules/math (Makefile.am): Substitute GNULIB_FMAF, HAVE_FMAF,
REPLACE_FMAF.
* modules/fmaf: New file.
* doc/posix-functions/fmaf.texi: Mention the new module and the various
bugs.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Mon, 17 Oct 2011 23:51:21 +0200 |
| parents | 97fc9a21a8fb |
| children | 8250f2777afc |
| rev | line source |
|---|---|
| 7934 | 1 /* Optimized case-insensitive string comparison in C locale. |
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maint: update almost all copyright ranges to include 2011
Jim Meyering <meyering@redhat.com>
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2 Copyright (C) 2001-2002, 2007, 2009-2011 Free Software Foundation, Inc. |
| 7934 | 3 |
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4 This program is free software: you can redistribute it and/or modify it |
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5 under the terms of the GNU Lesser General Public License as published |
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6 by the Free Software Foundation; either version 3 of the License, or |
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7 (at your option) any later version. |
| 7934 | 8 |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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12 Lesser General Public License for more details. |
| 7934 | 13 |
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14 You should have received a copy of the GNU Lesser General Public License |
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 7934 | 16 |
| 17 /* Written by Bruno Haible <bruno@clisp.org>. */ | |
| 18 | |
| 19 #include "c-strcase.h" | |
| 20 #include "c-ctype.h" | |
| 21 | |
| 22 /* STRCASEEQ allows to optimize string comparison with a small literal string. | |
| 23 STRCASEEQ (s, "UTF-8", 'U','T','F','-','8',0,0,0,0) | |
| 24 is semantically equivalent to | |
| 25 c_strcasecmp (s, "UTF-8") == 0 | |
| 26 just faster. */ | |
| 27 | |
| 28 /* Help GCC to generate good code for string comparisons with | |
| 29 immediate strings. */ | |
| 30 #if defined (__GNUC__) && defined (__OPTIMIZE__) | |
| 31 | |
| 32 /* Case insensitive comparison of ASCII characters. */ | |
| 33 # if C_CTYPE_ASCII | |
| 34 # define CASEEQ(other,upper) \ | |
| 35 (c_isupper (upper) ? ((other) & ~0x20) == (upper) : (other) == (upper)) | |
| 36 # elif C_CTYPE_CONSECUTIVE_UPPERCASE && C_CTYPE_CONSECUTIVE_LOWERCASE | |
| 37 # define CASEEQ(other,upper) \ | |
| 38 (c_isupper (upper) ? (other) == (upper) || (other) == (upper) - 'A' + 'a' : (other) == (upper)) | |
| 39 # else | |
| 40 # define CASEEQ(other,upper) \ | |
| 41 (c_toupper (other) == (upper)) | |
| 42 # endif | |
| 43 | |
| 44 static inline int | |
| 45 strcaseeq9 (const char *s1, const char *s2) | |
| 46 { | |
| 47 return c_strcasecmp (s1 + 9, s2 + 9) == 0; | |
| 48 } | |
| 49 | |
| 50 static inline int | |
| 51 strcaseeq8 (const char *s1, const char *s2, char s28) | |
| 52 { | |
| 53 if (CASEEQ (s1[8], s28)) | |
| 54 { | |
| 55 if (s28 == 0) | |
| 56 return 1; | |
| 57 else | |
| 58 return strcaseeq9 (s1, s2); | |
| 59 } | |
| 60 else | |
| 61 return 0; | |
| 62 } | |
| 63 | |
| 64 static inline int | |
| 65 strcaseeq7 (const char *s1, const char *s2, char s27, char s28) | |
| 66 { | |
| 67 if (CASEEQ (s1[7], s27)) | |
| 68 { | |
| 69 if (s27 == 0) | |
| 70 return 1; | |
| 71 else | |
| 72 return strcaseeq8 (s1, s2, s28); | |
| 73 } | |
| 74 else | |
| 75 return 0; | |
| 76 } | |
| 77 | |
| 78 static inline int | |
| 79 strcaseeq6 (const char *s1, const char *s2, char s26, char s27, char s28) | |
| 80 { | |
| 81 if (CASEEQ (s1[6], s26)) | |
| 82 { | |
| 83 if (s26 == 0) | |
| 84 return 1; | |
| 85 else | |
| 86 return strcaseeq7 (s1, s2, s27, s28); | |
| 87 } | |
| 88 else | |
| 89 return 0; | |
| 90 } | |
| 91 | |
| 92 static inline int | |
| 93 strcaseeq5 (const char *s1, const char *s2, char s25, char s26, char s27, char s28) | |
| 94 { | |
| 95 if (CASEEQ (s1[5], s25)) | |
| 96 { | |
| 97 if (s25 == 0) | |
| 98 return 1; | |
| 99 else | |
| 100 return strcaseeq6 (s1, s2, s26, s27, s28); | |
| 101 } | |
| 102 else | |
| 103 return 0; | |
| 104 } | |
| 105 | |
| 106 static inline int | |
| 107 strcaseeq4 (const char *s1, const char *s2, char s24, char s25, char s26, char s27, char s28) | |
| 108 { | |
| 109 if (CASEEQ (s1[4], s24)) | |
| 110 { | |
| 111 if (s24 == 0) | |
| 112 return 1; | |
| 113 else | |
| 114 return strcaseeq5 (s1, s2, s25, s26, s27, s28); | |
| 115 } | |
| 116 else | |
| 117 return 0; | |
| 118 } | |
| 119 | |
| 120 static inline int | |
| 121 strcaseeq3 (const char *s1, const char *s2, char s23, char s24, char s25, char s26, char s27, char s28) | |
| 122 { | |
| 123 if (CASEEQ (s1[3], s23)) | |
| 124 { | |
| 125 if (s23 == 0) | |
| 126 return 1; | |
| 127 else | |
| 128 return strcaseeq4 (s1, s2, s24, s25, s26, s27, s28); | |
| 129 } | |
| 130 else | |
| 131 return 0; | |
| 132 } | |
| 133 | |
| 134 static inline int | |
| 135 strcaseeq2 (const char *s1, const char *s2, char s22, char s23, char s24, char s25, char s26, char s27, char s28) | |
| 136 { | |
| 137 if (CASEEQ (s1[2], s22)) | |
| 138 { | |
| 139 if (s22 == 0) | |
| 140 return 1; | |
| 141 else | |
| 142 return strcaseeq3 (s1, s2, s23, s24, s25, s26, s27, s28); | |
| 143 } | |
| 144 else | |
| 145 return 0; | |
| 146 } | |
| 147 | |
| 148 static inline int | |
| 149 strcaseeq1 (const char *s1, const char *s2, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28) | |
| 150 { | |
| 151 if (CASEEQ (s1[1], s21)) | |
| 152 { | |
| 153 if (s21 == 0) | |
| 154 return 1; | |
| 155 else | |
| 156 return strcaseeq2 (s1, s2, s22, s23, s24, s25, s26, s27, s28); | |
| 157 } | |
| 158 else | |
| 159 return 0; | |
| 160 } | |
| 161 | |
| 162 static inline int | |
| 163 strcaseeq0 (const char *s1, const char *s2, char s20, char s21, char s22, char s23, char s24, char s25, char s26, char s27, char s28) | |
| 164 { | |
| 165 if (CASEEQ (s1[0], s20)) | |
| 166 { | |
| 167 if (s20 == 0) | |
| 168 return 1; | |
| 169 else | |
| 170 return strcaseeq1 (s1, s2, s21, s22, s23, s24, s25, s26, s27, s28); | |
| 171 } | |
| 172 else | |
| 173 return 0; | |
| 174 } | |
| 175 | |
| 176 #define STRCASEEQ(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \ | |
| 177 strcaseeq0 (s1, s2, s20, s21, s22, s23, s24, s25, s26, s27, s28) | |
| 178 | |
| 179 #else | |
| 180 | |
| 181 #define STRCASEEQ(s1,s2,s20,s21,s22,s23,s24,s25,s26,s27,s28) \ | |
| 182 (c_strcasecmp (s1, s2) == 0) | |
| 183 | |
| 184 #endif |