GRASS GIS 8 Programmer's Manual 8.3.2(2024)-exported
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mapcase.c
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1#include <grass/gis.h>
2/*
3 * Map uppercase A-Z to lower case a-z
4 *
5 */
6
7/*!
8 * \brief convert string to lower case
9 *
10 * Upper case
11 * letters in the string <b>s</b> are converted to their lower case equivalent.
12 * Returns <b>s.</b>
13 *
14 * \param string
15 * \return char
16 */
17
18char *G_tolcase(char *string)
19{
20 char *p;
21
22 for (p = string; *p; p++) {
23 /* convert to lower case */
24 if (*p >= 'A' && *p <= 'Z')
25 *p -= 'A' - 'a';
26 }
27
28 return (string);
29}
30
31/*
32 * Map lowercase a-z to uppercase A-Z
33 *
34 */
35
36/*!
37 * \brief convert string to upper case
38 *
39 * Lower case letters in the string <b>s</b> are converted to their upper case
40 * equivalent. Returns <b>s.</b>
41 *
42 * \param string
43 * \return char
44 */
45
46char *G_toucase(char *string)
47{
48 char *p;
49
50 for (p = string; *p; p++) {
51 /* convert to upper case */
52 if (*p >= 'A' && *p <= 'z')
53 *p += 'A' - 'a';
54 }
55
56 return (string);
57}
char * G_toucase(char *string)
convert string to upper case
Definition mapcase.c:46
char * G_tolcase(char *string)
convert string to lower case
Definition mapcase.c:18