gbdk-2020 | GameBoy Development Kit |
| download: https://git.y1.nz/archives/gbdk.tar.gz | |
| README | Files | Log | Refs | LICENSE |
gbdk-lib/include/asm/mos6502/stdlib.h
1 /** file stdlib.h
2 'Standard library' functions, for whatever that means.
3 */
4 #ifndef STDLIB_INCLUDE
5 #define STDLIB_INCLUDE
6
7 #include <types.h>
8
9 /** Causes normal program termination and the value of status is
10 returned to the parent.
11 All open streams are flushed and closed.
12 */
13 void exit(int status);
14
15 #if 0
16 /** Compatibility function. Not implemented.
17 */
18 int getkey(void);
19 #endif
20
21 /** Returns the absolute value of int __i__
22 @param i Int to obtain absolute value of
23
24 If i is negative, returns -i; else returns i.
25 */
26 int abs(int i);
27
28
29 /** Returns the absolute value of long int __num__
30
31 @param num Long integer to obtain absolute value of
32 */
33 long labs(long num);
34
35
36 /** Converts an ASCII string to an int
37
38 @param s String to convert to an int
39
40 The string may be of the format
41 \code{.c}
42 [\s]*[+-][\d]+[\D]*
43 \endcode
44 i.e. any number of spaces, an optional + or -, then an
45 arbitrary number of digits.
46
47 The result is undefined if the number doesnt fit in an int.
48
49 Returns: Int value of string
50 */
51 int atoi(const char *s);
52
53
54 /** Converts an ASCII string to a long.
55 @param s String to convert to an long int
56 @see atoi()
57
58 Returns: Long int value of string
59 */
60 long atol(const char *s);
61
62 /** Converts an int into a base 10 ASCII string.
63 @param n Int to convert to a string
64 @param s String to store the converted number
65 @param radix Numerical base for converted number, ex: 10 is decimal base
66 (parameter is required but not utilized on Game Boy and Analogue Pocket)
67
68 Can be used with @ref set_bkg_based_tiles() for printing if
69 the digit character tiles are not ascii-mapped.
70
71 Returns: Pointer to converted string
72 */
73 char *itoa(int n, char *s, unsigned char radix);
74
75 /** Converts an unsigned int into a base 10 ASCII string.
76 @param n Unsigned Int to convert to a string
77 @param s String to store the converted number
78 @param radix Numerical base for converted number, ex: 10 is decimal base
79 (parameter is required but not utilized on Game Boy and Analogue Pocket)
80
81 Can be used with @ref set_bkg_based_tiles() for printing if
82 the digit character tiles are not ascii-mapped.
83
84 Returns: Pointer to converted string
85 */
86 char *uitoa(unsigned int n, char *s, unsigned char radix);
87
88 /** Converts a long into a base 10 ASCII string.
89 @param n Long int to convert to a string
90 @param s String to store the converted number
91 @param radix Numerical base for converted number, ex: 10 is decimal base
92 (parameter is required but not utilized on Game Boy and Analogue Pocket)
93
94 Can be used with @ref set_bkg_based_tiles() for printing if
95 the digit character tiles are not ascii-mapped.
96
97 Returns: Pointer to converted string
98 */
99 char *ltoa(long n, char *s, unsigned char radix);
100
101 /** Converts an unsigned long into a base 10 ASCII string.
102 @param n Unsigned Long Int to convert to a string
103 @param s String to store the converted number
104 @param radix Numerical base for converted number, ex: 10 is decimal base
105 (parameter is required but not utilized on Game Boy and Analogue Pocket)
106
107 Can be used with @ref set_bkg_based_tiles() for printing if
108 the digit character tiles are not ascii-mapped.
109
110 Returns: Pointer to converted string
111 */
112 char *ultoa(unsigned long n, char *s, unsigned char radix);
113
114
115 /** Memory allocation functions
116 */
117 void *calloc (size_t nmemb, size_t size);
118 void *malloc (size_t size);
119 void *realloc (void *ptr, size_t size);
120 #if __STDC_VERSION__ >= 201112L
121 inline void *aligned_alloc(size_t alignment, size_t size)
122 {
123 (void)alignment;
124 return malloc(size);
125 }
126 #endif
127 extern void free (void * ptr);
128
129 /* Searching and sorting utilities (ISO C11 7.22.5) */
130 /** search a sorted array of __nmemb__ items
131 @param key Pointer to object that is the key for the search
132 @param base Pointer to first object in the array to search
133 @param nmemb Number of elements in the array
134 @param size Size in bytes of each element in the array
135 @param compar Function used to compare two elements of the array
136
137 Returns: Pointer to array entry that matches the search key.
138 If key is not found, NULL is returned.
139 */
140 extern void *bsearch(const void *key, const void *base, size_t nmemb, size_t size, int (*compar)(const void *, const void *) REENTRANT);
141
142
143 /** Sort an array of __nmemb__ items
144 @param base Pointer to first object in the array to sort
145 @param nmemb Number of elements in the array
146 @param size Size in bytes of each element in the array
147 @param compar Function used to compare and sort two elements of the array
148 */
149 extern void qsort(void *base, size_t nmemb, size_t size, int (*compar)(const void *, const void *) REENTRANT);
150
151 #endif
This webpage is intended to be an accessible preview of this repository. To get a fuller picture, clone it and use the git CLI.