megadrive_test1

annotate src/libc/ctype.c @ 6:862f8a034cae

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expanding the megadrive code
author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 11 Feb 2017 08:56:42 +0200
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nuclear@6 1 int isalpha(int c);
nuclear@6 2 int isdigit(int c);
nuclear@6 3 int islower(int c);
nuclear@6 4 int isupper(int c);
nuclear@6 5
nuclear@6 6
nuclear@6 7 int isalnum(int c)
nuclear@6 8 {
nuclear@6 9 return isalpha(c) || isdigit(c);
nuclear@6 10 }
nuclear@6 11
nuclear@6 12 int isalpha(int c)
nuclear@6 13 {
nuclear@6 14 return isupper(c) || islower(c);
nuclear@6 15 }
nuclear@6 16
nuclear@6 17 int isblank(int c)
nuclear@6 18 {
nuclear@6 19 return c == ' ' || c == '\t';
nuclear@6 20 }
nuclear@6 21
nuclear@6 22 int isdigit(int c)
nuclear@6 23 {
nuclear@6 24 return c >= '0' && c <= '9';
nuclear@6 25 }
nuclear@6 26
nuclear@6 27 int isupper(int c)
nuclear@6 28 {
nuclear@6 29 return c >= 'A' && c <= 'Z';
nuclear@6 30 }
nuclear@6 31
nuclear@6 32 int islower(int c)
nuclear@6 33 {
nuclear@6 34 return c >= 'a' && c <= 'z';
nuclear@6 35 }
nuclear@6 36
nuclear@6 37 int isgraph(int c)
nuclear@6 38 {
nuclear@6 39 return c > ' ' && c <= '~';
nuclear@6 40 }
nuclear@6 41
nuclear@6 42 int isprint(int c)
nuclear@6 43 {
nuclear@6 44 return isgraph(c) || c == ' ';
nuclear@6 45 }
nuclear@6 46
nuclear@6 47 int isspace(int c)
nuclear@6 48 {
nuclear@6 49 return isblank(c) || c == '\f' || c == '\n' || c == '\r' || c == '\v';
nuclear@6 50 }
nuclear@6 51
nuclear@6 52 int toupper(int c)
nuclear@6 53 {
nuclear@6 54 return islower(c) ? (c + ('A' - 'a')) : c;
nuclear@6 55 }
nuclear@6 56
nuclear@6 57 int tolower(int c)
nuclear@6 58 {
nuclear@6 59 return isupper(c) ? (c + ('A' - 'a')) : c;
nuclear@6 60 }