port.h

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/*-------------------------------------------------------------------------
 *
 * port.h
 *    Header for src/port/ compatibility functions.
 *
 * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/port.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PG_PORT_H
#define PG_PORT_H
 
#include <ctype.h>
 
/* Portable SQL-like case-independent comparisons and conversions */
extern int  pg_strcasecmp(const char *s1, const char *s2);
extern int  pg_strncasecmp(const char *s1, const char *s2, size_t n);
extern unsigned char pg_toupper(unsigned char ch);
extern unsigned char pg_tolower(unsigned char ch);
extern unsigned char pg_ascii_toupper(unsigned char ch);
extern unsigned char pg_ascii_tolower(unsigned char ch);
 
 
extern void pg_qsort(void *base, size_t nel, size_t elsize,
                     int (*cmp) (const void *, const void *));
extern int  pg_qsort_strcmp(const void *a, const void *b);
 
#define qsort(a,b,c,d) pg_qsort(a,b,c,d)
 
typedef int (*qsort_arg_comparator) (const void *a, const void *b, void *arg);
 
extern void qsort_arg(void *base, size_t nel, size_t elsize,
                      qsort_arg_comparator cmp, void *arg);
 
#endif                          /* PG_PORT_H */