/**
* This file is part of Erjang - A JVM-based Erlang VM
*
* Copyright (c) 2009 by Trifork
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
package erjang.m.math;
import erjang.BIF;
import erjang.EDouble;
import erjang.ENative;
import erjang.ENumber;
import erjang.EObject;
import erjang.ERT;
/**
*
*/
public class Native extends ENative {
@BIF
static public ENumber pow(EObject o1, EObject o2)
{
ENumber n1 = o1.testNumber();
ENumber n2 = o2.testNumber();
double res = Math.pow(n1.doubleValue(), n2.doubleValue());
return ERT.box(res);
}
@BIF
public static ENumber sin(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return new EDouble(Math.sin(num.doubleValue()));
}
throw ERT.badarg(val);
}
@BIF
public static ENumber cos(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return new EDouble(Math.cos(num.doubleValue()));
}
throw ERT.badarg(val);
}
@BIF
public static ENumber tan(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.tan(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static ENumber asin(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.asin(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static ENumber acos(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.acos(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static EDouble atan(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.atan(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static EDouble sinh(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.sinh(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static EDouble cosh(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.cosh(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static EDouble tanh(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.tanh(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static EDouble exp(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.exp(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static EDouble log(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.log(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static ENumber log10(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.log10(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
@BIF
public static EDouble atan2(EObject val1, EObject val2)
{
ENumber num1, num2;
if ((num1 = val1.testNumber()) != null
&& (num2 = val2.testNumber()) != null) {
return new EDouble(Math.atan2(num1.doubleValue(), num2.doubleValue()));
}
throw ERT.badarg(val1, val2);
}
@BIF
public static EDouble pi()
{
return new EDouble(Math.PI);
}
@BIF
public static EDouble sqrt(EDouble val)
{
return boxIfValid(Math.sqrt(val.value), val);
}
@BIF
public static EDouble sqrt(EObject val)
{
ENumber num;
if ((num = val.testNumber()) != null) {
return boxIfValid(Math.sqrt(num.doubleValue()), val);
}
throw ERT.badarg(val);
}
public static EDouble boxIfValid(double value, EObject arg) {
if (Double.isNaN(value) || Double.isInfinite(value)) throw ERT.badarg(arg);
else return new EDouble(value);
}
}