revert commits improved performance of some extensible Standard Functions (ADD, MUL, AND, OR, XOR)
Following commits are reverted:
mjsousa 0b275a2 improve performance of some extensible Standard Functions (ADD, MUL, AND, OR, XOR) -- increase hardcoded limit to 499
mjsousa 2228799 improve performance of some extensible Standard Functions (ADD, MUL, AND, OR, XOR) -- Add comments!!
mjsousa ce81fa6 improve performance of some extensible Standard Functions (ADD, MUL, AND, OR, XOR)"
The reason is that they cause regression in some cases (if function is
used as argument for function block, for example) and this is not
fixed for a long time.
/*
* matiec - a compiler for the programming languages defined in IEC 61131-3
*
* Copyright (C) 2011 Mario de Sousa (msousa@fe.up.pt)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
* This code is made available on the understanding that it will not be
* used in safety-critical situations without a full and competent review.
*/
/*******************************************/
/* String Duplication Utility Functions... */
/*******************************************/
#ifndef STRDUP__H
#define STRDUP__H
#include <stdlib.h> /* required for malloc() */
#include <string.h> /* required for strcat() & strlen() */
/*
* Join two strings together. Allocate space with malloc(3).
*/
static char *strdup2(const char *a, const char *b) {
char *res = (char *)malloc(strlen(a) + strlen(b) + 1);
if (res == NULL) return NULL;
return strcat(strcpy(res, a), b);
}
/*
* Join three strings together. Allocate space with malloc(3).
*/
static char *strdup3(const char *a, const char *b, const char *c) {
char *res = (char *)malloc(strlen(a) + strlen(b) + strlen(c) + 1);
if (res == NULL) return NULL;
return strcat(strcat(strcpy(res, a), b), c);
}
#endif /* STRDUP__H */