/*********************************************************************** * * * This software is part of the ast package * * Copyright (c) 1985-2007 AT&T Knowledge Ventures * * and is licensed under the * * Common Public License, Version 1.0 * * by AT&T Knowledge Ventures * * * * A copy of the License is available at * * http://www.opensource.org/licenses/cpl1.0.txt * * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) * * * * Information and Software Systems Research * * AT&T Research * * Florham Park NJ * * * * Glenn Fowler <gsf@research.att.com> * * David Korn <dgk@research.att.com> * * Phong Vo <kpv@research.att.com> * * * ***********************************************************************/ #pragma prototyped /* * Glenn Fowler * AT&T Research * * internal representation conversion support */ #include <ast.h> #include <swap.h> /* * get int_n from b according to op */ intmax_t swapget(int op, const void* b, int n) { register unsigned char* p; register unsigned char* d; intmax_t v; unsigned char tmp[sizeof(intmax_t)]; if (n > sizeof(intmax_t)) n = sizeof(intmax_t); if (op) swapmem(op, b, d = tmp, n); else d = (unsigned char*)b; p = d + n; v = 0; while (d < p) { v <<= CHAR_BIT; v |= *d++; } return v; }