English

# RPN(Reverse Polish Notation) calculator

RPN calculator calculates even complicated terms without braces. This Reverse Polish Notation calculator uses postfix representations. It has many advantages over Algebraic notation.

# Features

• You can calculate even complicated terms without braces.
• Used for postfix notations.
• Provides easy accessibility to calculation.
• Calculations can be performed by using both keyboard or mouse clicks.
• When a number is entered, the previous entry is raised in the stack, so that several values can be stored.

# Preview

RPN Calculator

 T : Z : Y : X :

Javascript Code

<!-- Script by hscripts.com -->
<!-- More scripts @www.hscripts.com -->
<script type="text/javascript">
var lift = 0;
var line = "";
var x = 0;
var y = 0;
var z = 0;
var t = 0;
var arc = 0;
var mem1 = 0;
var mem2 = 0;
var mem3 = 0;
var degmode = 1;
var valpi = 3.14159265358979323846;
var degtorad = valpi / 180;
var radtodeg = 180 / valpi;
function convert()
{if (line != ""){ x = parseFloat(line); line = ""; }
}
function show()
{document.rpncalc.t.value = t;
document.rpncalc.z.value = z;document.rpncalc.y.value = y;
document.rpncalc.x.value = x;
}
function clearall()
{x = y = z = t = mem1 = mem2 = mem3 = 0;line = ""; show();
}
function clx()
{x = 0; line = ""; show(); lift = 0;
}
function clearreg()
{convert();
mem1 = 0; mem2 = 0; mem3 = 0; lift = 1;
}function exchange()
{convert(); var temp = x; x = y; y = temp; show(); lift = 1;
}
function rolldown()
{convert(); var temp = x; x = y; y = z; z = t; t = temp; show(); lift = 1;
}
function rollup()
{convert(); var temp = t; t = z; z = y; y = x; x = temp; show(); lift = 1;
}
function drop()
{y = z; z = t;
}function number1(digit)
{if (lift) enter();lift = 0; line += digit; document.rpncalc.x.value = line;
}
function enter()
{convert(); t = z; z = y; y = x; show();
}
function plus()
{convert(); x = x + y; drop(); show(); lift = 1;
}
function minus()
{convert(); x = y - x; drop(); show(); lift = 1;
}
function times()
{convert(); x = x * y; drop(); show(); lift = 1;
}
function divide()
{convert(); x = y / x; drop(); show(); lift = 1;
}
function squarert()
{convert(); x = Math.sqrt(x); show(); lift = 1;
}
function square()
{convert(); x = x * x; show(); lift = 1;
}
function pie()
{if (lift || (line != "")) enter();convert(); x = Math.PI; show(); lift = 1;
}
function sqrt()
{convert(); x = Math.sqrt(x); show(); lift = 1;
}
function setarc()
{arc = 1;
}
function sine()
{convert();if (arc) x = invtrig(Math.asin(x));else x = Math.sin(pretrig(x));show(); lift = 1; arc = 0;
}
function cosine()
{convert();if (arc) x = invtrig(Math.acos(x));else x = Math.cos(pretrig(x));if ( x < 6.124e-17 ) { x = 0; } // cos 90 = 0show(); lift = 1; arc = 0;
}
function tangent()
{convert();if (arc) x = invtrig(Math.atan(x));else x = Math.tan(pretrig(x));if ( x > 1633e13) { x = 1/0; } // tan 90 = Infinityshow(); lift = 1; arc = 0;
}
function natlog()
{convert(); x = Math.log(x); show(); lift = 1;
}
function expon()
{convert(); x = Math.exp(x); show(); lift = 1;
}
function power()
{convert(); x = Math.pow(y, x); drop(); show(); lift = 1;
}
function recip()
{convert(); x = 1 / x; show(); lift = 1;
}
function changes()
{convert(); x = -x; show(); lift = 1;
}
function store()
{convert();if (x == 1) mem1 = y;if (x == 2) mem2 = y;if (x == 3) mem3 = y;x = y; drop(); show(); lift = 1;
}
{convert();if (x == 1) mem1 = mem1 + y;if (x == 2) mem2 = mem2 + y;if (x == 3) mem3 = mem3 + y;x = y; drop(); show(); lift = 1;
}
function storeminus()
{convert();if (x == 1) mem1 = mem1 - y;if (x == 2) mem2 = mem2 - y;if (x == 3) mem3 = mem3 - y;x = y; drop(); show(); lift = 1;
}
function recall()
{if (lift || (line != "")) enter();convert(); if (x == 3) x = mem3;if (x == 2) x = mem2;if (x == 1) x = mem1;drop(); show(); lift = 1;
}
function percent()
{convert(); x = x * y / 100; drop(); show(); lift = 1;
}
function clrstack()
{convert(); t = 0; z = 0; y = 0; x = 0; show(); lift = 1;
}
{degmode = x;
}
function pretrig(x)
{if(degmode) { x *= degtorad; }return(x);
}
function invtrig(x)
{if(degmode) { x *= radtodeg; }return(x);
}
function ffact()
{ convert(); var counter = x; var fct = counter;while(--counter > 0) { fct *= counter; }x = fct; show(); lift = 1;
}
function ctck()
{var sds = document.getElementById("dum");if(sds == null){alert("You are using a free package.\n You are not allowed to remove the tag.\n");}var sdss = document.getElementById("dumdiv");if(sdss == null){alert("You are using a free package.\n You are not allowed to remove the tag.\n");}
}
</script>

<!-- Script by hscripts.com -->

HTML Code

<center><h2>Javascript RPN Scientific Calculator</h2>
<form name="rpncalc">
<table border=1 width="500px" bgcolor="#c3d9ff">
<tr><td colspan=5><table align=center bgcolor="#ffffcc"><tr><td>T : </td><td><input name="t" type="text" size="30" value="0"></td></tr><tr><td>Z : </td><td><input name="z" type="text" size="30" value="0"></td></tr><tr><td>Y : </td><td><input name="y" type="text" size="30" value="0"></td></tr><tr><td>X : </td><td><input name="x" type="text" size="30" value="0"></td></tr></table>
</td></tr>
</tr>
<tr align="center"><td><input type="button" style="width:60px;" value="ln" onClick="natlog()"><td><input type="button" style="width:60px;" value="e^x" onClick="expon()"><td><input type="button" style="width:60px;" value="y^x" onClick="power()"><td><input type="button" style="width:60px;" value="1/x" onClick="recip()"><td><input type="button" style="width:60px;" value="%" onClick="percent()">
</tr>
<tr align="center"><td><input type="button" style="width:60px;" value="pi" onClick="pie()"><td><input type="button" style="width:60px;" value="arc" onClick="setarc()"><td><input type="button" style="width:60px;" value="sin" onClick="sine()"><td><input type="button" style="width:60px;" value="cos" onClick="cosine()"><td><input type="button" style="width:60px;" value="tan" onClick="tangent()">
</tr>
<tr align="center"><td><input type="button" style="width:60px;" value="rup" onClick="rollup()"><td><input type="button" style="width:60px;" value="chs" onClick="changes()"><td><input type="button" style="width:60px;" value="x<>y" onClick="exchange()"><td><input type="button" style="width:60px;" value="x^2" onClick="square()"><td><input type="button" style="width:60px;" value="sqrt" onClick="squarert()">
</tr>
<tr align="center">
<td><input type="button" style="width:60px;" value="rdn" onClick="rolldown()"><td><input type="button" style="width:60px;" value="clrg" onClick="clearreg()"><td><input type="button" style="width:60px;" value="clst" onClick="clrstack()"><td><input type="button" style="width:60px;" value="clx" onClick="clx()"><td><input type="button" style="width:60px;" value="enter" onClick="enter()">
</tr>
<tr align="center"><td><input type="button" style="width:60px;" value=" 7 " onClick="number1('7')"><td><input type="button" style="width:60px;" value=" 8 " onClick="number1('8')"><td><input type="button" style="width:60px;" value=" 9 " onClick="number1('9')"><td><input type="button" style="width:60px;" value=" + " onClick="plus()"><td><input type="button" style="width:60px;" value="sto+" onClick="storeadd()">
</tr>
<tr align="center"><td><input type="button" style="width:60px;" value=" 4 " onClick="number1('4')"><td><input type="button" style="width:60px;" value=" 5 " onClick="number1('5')"><td><input type="button" style="width:60px;" value=" 6 " onClick="number1('6')"><td><input type="button" style="width:60px;" value=" - " onClick="minus()"><td><input type="button" style="width:60px;" value="sto-" onClick="storeminus()">
</tr>
<tr align="center"><td><input type="button" style="width:60px;" value=" 1 " onClick="number1('1')"><td><input type="button" style="width:60px;" value=" 2 " onClick="number1('2')"><td><input type="button" style="width:60px;" value=" 3 " onClick="number1('3')"><td><input type="button" style="width:60px;" value=" * " onClick="times()"><td><input type="button" style="width:60px;" value="sto" onClick="store()">
</tr>
<tr align="center"><td><input type="button" style="width:60px;" value=" 0 " onClick="number1('0')"><td><input type="button" style="width:60px;" value=" . " onClick="number1('.')"><td><input type="button" style="width:60px;" value="eex" onClick="number1('e')"><td><input type="button" style="width:60px;" value=" / " onClick="divide()"><td><input type="button" style="width:60px;" value="rcl" onClick="recall()">
</tr>
</table>
</form>
</body>

• Release Date - 11-02-2010
• For customization of this script or any script development, mail to support@hscripts.com

# Usage

• Copy and paste the javascript code into your HTML page and make use of this RPN(Reverse Polish Notation)calculator.
• This script can be used for postfix representations.
• This script can be used to solve complicated terms without braces.