85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
//---
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//
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// standard library module: ctype
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//
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// Some character manipulation.
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//
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//---
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#ifndef _CTYPE_H
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#define _CTYPE_H 1
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#include <stdint.h>
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//---
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// Character classes.
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//---
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extern uint8_t ctype_classes[0x80];
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__attribute__((always_inline)) static inline int isalnum(int c) {
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return ctype_classes[c] & 0xf0;
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}
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__attribute__((always_inline)) static inline int isalpha(int c) {
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return ctype_classes[c] & 0x30;
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}
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__attribute__((always_inline)) static inline int iscntrl(int c) {
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return ctype_classes[c] & 0x01;
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}
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__attribute__((always_inline)) static inline int isdigit(int c) {
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return ctype_classes[c] & 0x40;
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}
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__attribute__((always_inline)) static inline int isgraph(int c) {
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return ctype_classes[c] & 0xf4;
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}
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__attribute__((always_inline)) static inline int islower(int c) {
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return ctype_classes[c] & 0x10;
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}
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__attribute__((always_inline)) static inline int isprint(int c) {
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return ctype_classes[c] & 0x08;
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}
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__attribute__((always_inline)) static inline int ispunct(int c) {
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return ctype_classes[c] & 0x04;
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}
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__attribute__((always_inline)) static inline int isspace(int c) {
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return ctype_classes[c] & 0x02;
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}
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__attribute__((always_inline)) static inline int isupper(int c) {
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return ctype_classes[c] & 0x20;
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}
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__attribute__((always_inline)) static inline int isxdigit(int c) {
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return ctype_classes[c] & 0x80;
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}
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__attribute__((always_inline)) static inline int isascii(int c) {
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return ((unsigned)c <= 0x7f);
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}
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__attribute__((always_inline)) static inline int isblank(int c) {
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return (c == '\t' || c == ' ');
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}
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//---
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// Character manipulation.
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//---
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__attribute__((always_inline)) static inline int tolower(int c) {
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return c | isupper(c);
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}
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__attribute__((always_inline)) static inline int toupper(int c) {
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return c & ~(islower(c) << 1);
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}
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#endif // _CTYPE_H
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