fis-gtm/sr_port/f_fnzbitfind.c

51 lines
1.2 KiB
C

/****************************************************************
* *
* Copyright 2001 Sanchez Computer Associates, Inc. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#include "compiler.h"
#include "opcode.h"
#include "toktyp.h"
#include "advancewindow.h"
GBLREF char window_token;
int f_fnzbitfind( oprtype *a, opctype op)
{
triple *r, *parm;
error_def(ERR_COMMA);
r = maketriple(op);
if (!expr(&(r->operand[0]))) /* bitstring */
return FALSE;
if (window_token != TK_COMMA)
{
stx_error(ERR_COMMA);
return FALSE;
}
parm = newtriple(OC_PARAMETER);
r->operand[1] = put_tref(parm);
advancewindow();
if (!intexpr(&(parm->operand[0]))) /* truthval */
return FALSE;
if (window_token != TK_COMMA)
parm->operand[1] = put_ilit(1);
else
{
advancewindow();
if (!intexpr(&(parm->operand[1]))) /* position */
return FALSE;
}
ins_triple(r);
*a = put_tref(r);
return TRUE;
}