175 lines
3.9 KiB
C++
175 lines
3.9 KiB
C++
/*
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* Copyright (c) 2003-2010 Stephen Williams (steve@icarus.com)
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*
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* This source code is free software; you can redistribute it
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* and/or modify it in source code form under the terms of the GNU
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* General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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# include "vpi_priv.h"
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# include "schedule.h"
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# include <stdio.h>
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# include <stdlib.h>
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# include <string.h>
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#ifdef HAVE_MALLOC_H
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# include <malloc.h>
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#endif
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# include <assert.h>
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struct __vpiRealVar {
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struct __vpiHandle base;
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const char*name;
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double value;
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struct __vpiCallback*cb;
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};
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static char* real_var_get_str(int code, vpiHandle ref)
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{
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assert(ref->vpi_type->type_code == vpiRealVar);
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struct __vpiRealVar*rfp = (struct __vpiRealVar*)ref;
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char *rbuf = need_result_buf(strlen(rfp->name) + 1, RBUF_STR);
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switch (code) {
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case vpiName:
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strcpy(rbuf, rfp->name);
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return rbuf;
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default:
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return 0;
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}
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return 0;
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}
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static void real_var_get_value(vpiHandle ref, s_vpi_value*vp)
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{
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assert(ref->vpi_type->type_code == vpiRealVar);
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struct __vpiRealVar*rfp = (struct __vpiRealVar*)ref;
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char*rbuf = need_result_buf(64 + 1, RBUF_VAL);
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switch (vp->format) {
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case vpiObjTypeVal:
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vp->format = vpiRealVal;
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case vpiRealVal:
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vp->value.real = rfp->value;
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break;
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case vpiIntVal:
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vp->value.integer = (int)(rfp->value + 0.5);
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break;
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case vpiDecStrVal:
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sprintf(rbuf, "%0.0f", rfp->value);
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vp->value.str = rbuf;
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break;
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case vpiHexStrVal:
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sprintf(rbuf, "%lx", (long)rfp->value);
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vp->value.str = rbuf;
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break;
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case vpiBinStrVal: {
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unsigned long val = (unsigned long)rfp->value;
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unsigned len = 0;
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while (val > 0) {
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len += 1;
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val /= 2;
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}
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val = (unsigned long)rfp->value;
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for (unsigned idx = 0 ; idx < len ; idx += 1) {
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rbuf[len-idx-1] = (val & 1)? '1' : '0';
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val /= 2;
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}
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rbuf[len] = 0;
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if (len == 0) {
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rbuf[0] = '0';
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rbuf[1] = 0;
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}
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vp->value.str = rbuf;
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break;
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}
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default:
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fprintf(stderr, "ERROR: Unsupported format code: %d\n",
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vp->format);
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assert(0);
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}
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}
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static vpiHandle real_var_put_value(vpiHandle ref, p_vpi_value vp)
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{
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assert(ref->vpi_type->type_code == vpiRealVar);
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struct __vpiRealVar*rfp = (struct __vpiRealVar*)ref;
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assert(vp->format == vpiRealVal);
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rfp->value = vp->value.real;
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for (struct __vpiCallback*cur = rfp->cb ; cur ; cur = cur->next) {
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cur->cb_data.time->type = vpiSimTime;
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vpip_time_to_timestruct(cur->cb_data.time, schedule_simtime());
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assert(cur->cb_data.cb_rtn != 0);
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(cur->cb_data.cb_rtn)(&cur->cb_data);
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}
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return 0;
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}
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static const struct __vpirt vpip_real_var_rt = {
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vpiRealVar,
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0,
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&real_var_get_str,
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&real_var_get_value,
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&real_var_put_value,
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0,
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0,
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0,
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0
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};
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void vpip_real_value_change(struct __vpiCallback*cbh,
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vpiHandle ref)
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{
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struct __vpiRealVar*rfp = (struct __vpiRealVar*)ref;
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cbh->next = rfp->cb;
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rfp->cb = cbh;
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}
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vpiHandle vpip_make_real_var(const char*name)
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{
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struct __vpiRealVar*obj = (struct __vpiRealVar*)
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malloc(sizeof(struct __vpiRealVar));
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obj->base.vpi_type = &vpip_real_var_rt;
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obj->name = vpip_name_string(name);
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obj->value = 0.0;
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obj->cb = 0;
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return &obj->base;
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}
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