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<a name='L1'><i><font color='green'>/*</font></i>
<a name='L2'><i><font color='green'>* linux/lib/ctype.c</font></i>
<a name='L3'><i><font color='green'>*</font></i>
<a name='L4'><i><font color='green'>479</font></i>
<a name='L5'><i><font color='green'>* (C) 1991 Linus Torvalds</font></i>
<a name='L6'><i><font color='green'>*/</font></i>
<a name='L7'>
<a name='L8'><font color='darkred'>#include</font> <<a href='27.html'>ctype.h</a>> <i><font color='green'>// 字符类型头文件。定义了一些有关字符类型判断和转换的宏。</font></i>
<a name='L9'>
<a name='L10'><b>char</b> _ctmp; <i><font color='green'>// 一个临时字符变量，供ctype.h 文件中转换字符宏函数使用。</font></i>
<a name='L11'><i><font color='green'>// 字符特性数组(表)，定义了各个字符对应的属性，这些属性类型(如_C 等)在ctype.h 中定义。</font></i>
<a name='L12'><i><font color='green'>// 用于判断字符是控制字符(_C)、大写字符(_U)、小写字符(_L)等所属类型。</font></i>
<a name='L13'><b>unsigned</b> <b>char</b> _ctype[] = <font color='red'>{</font> 0x00, <i><font color='green'>/* EOF */</font></i>
<a name='L14'> <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <i><font color='green'>/* 0-7 */</font></i>
<a name='L15'> <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a> | <a href='../D/584.html' title='Multiple defined in 2 places.'>_S</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a> | <a href='../D/584.html' title='Multiple defined in 2 places.'>_S</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a> | <a href='../D/584.html' title='Multiple defined in 2 places.'>_S</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a> | <a href='../D/584.html' title='Multiple defined in 2 places.'>_S</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a> | <a href='../D/584.html' title='Multiple defined in 2 places.'>_S</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <i><font color='green'>/* 8-15 */</font></i>
<a name='L16'> <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <i><font color='green'>/* 16-23 */</font></i>
<a name='L17'> <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <i><font color='green'>/* 24-31 */</font></i>
<a name='L18'> <a href='../D/584.html' title='Multiple defined in 2 places.'>_S</a> | <a href='../S/27.html#L11' title='Defined at 11 in include/ctype.h.'>_SP</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <i><font color='green'>/* 32-39 */</font></i>
<a name='L19'> <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <i><font color='green'>/* 40-47 */</font></i>
<a name='L20'> <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <i><font color='green'>/* 48-55 */</font></i>
<a name='L21'> <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L6' title='Defined at 6 in include/ctype.h.'>_D</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <i><font color='green'>/* 56-63 */</font></i>
<a name='L22'> <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <i><font color='green'>/* 64-71 */</font></i>
<a name='L23'> <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <i><font color='green'>/* 72-79 */</font></i>
<a name='L24'> <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <i><font color='green'>/* 80-87 */</font></i>
<a name='L25'> <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L4' title='Defined at 4 in include/ctype.h.'>_U</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <i><font color='green'>/* 88-95 */</font></i>
<a name='L26'> <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a> | <a href='../S/27.html#L10' title='Defined at 10 in include/ctype.h.'>_X</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <i><font color='green'>/* 96-103 */</font></i>
<a name='L27'> <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <i><font color='green'>/* 104-111 */</font></i>
<a name='L28'> <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <i><font color='green'>/* 112-119 */</font></i>
<a name='L29'> <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L5' title='Defined at 5 in include/ctype.h.'>_L</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L8' title='Defined at 8 in include/ctype.h.'>_P</a>, <a href='../S/27.html#L7' title='Defined at 7 in include/ctype.h.'>_C</a>, <i><font color='green'>/* 120-127 */</font></i>
<a name='L30'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, <i><font color='green'>/* 128-143 */</font></i>
<a name='L31'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, <i><font color='green'>/* 144-159 */</font></i>
<a name='L32'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, <i><font color='green'>/* 160-175 */</font></i>
<a name='L33'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, <i><font color='green'>/* 176-191 */</font></i>
<a name='L34'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, <i><font color='green'>/* 192-207 */</font></i>
<a name='L35'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, <i><font color='green'>/* 208-223 */</font></i>
<a name='L36'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, <i><font color='green'>/* 224-239 */</font></i>
<a name='L37'> 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
<a name='L38'><font color='red'>}</font>; <i><font color='green'>/* 240-255 */</font></i>
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