/* crypto/stack/stack.h *//* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. *  * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to.  The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code.  The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). *  * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. *  * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software *    must display the following acknowledgement: *    "This product includes cryptographic software written by *     Eric Young (eay@cryptsoft.com)" *    The word 'cryptographic' can be left out if the rouines from the library *    being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from  *    the apps directory (application code) you must include an acknowledgement: *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" *  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. *  * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed.  i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */#ifndef HEADER_STACK_H#define HEADER_STACK_H#ifdef  __cplusplusextern "C" {#endif    typedef struct stack_st {	int num;	char **data;	int sorted;	int num_alloc;	int (*comp) (const char *const *, const char *const *);    } STACK;#define M_sk_num(sk)		((sk) ? (sk)->num:-1)#define M_sk_value(sk,n)	((sk) ? (sk)->data[n] : NULL)    int sk_num(const STACK *);    char *sk_value(const STACK *, int);    char *sk_set(STACK *, int, char *);    STACK *sk_new(int (*cmp) (const char *const *, const char *const *));    STACK *sk_new_null(void);    void sk_free(STACK *);    void sk_pop_free(STACK * st, void (*func) (void *));    int sk_insert(STACK * sk, char *data, int where);    char *sk_delete(STACK * st, int loc);    char *sk_delete_ptr(STACK * st, char *p);    int sk_find(STACK * st, char *data);    int sk_push(STACK * st, char *data);    int sk_unshift(STACK * st, char *data);    char *sk_shift(STACK * st);    char *sk_pop(STACK * st);    void sk_zero(STACK * st);    int (*sk_set_cmp_func(STACK * sk, int (*c) (const char *const *,						const char *const *)))     (const char *const *, const char *const *);    STACK *sk_dup(STACK * st);    void sk_sort(STACK * st);#ifdef  __cplusplus}#endif#endif