Full version: jsB@nk » Calculation » Bitwise operators
URL: https://www.javascriptbank.com/bitwise.html
This JavaScript can be used to calculate some bitwise operators.
Full version: jsB@nk » Calculation » Bitwise operators
URL: https://www.javascriptbank.com/bitwise.html
<script language="JavaScript1.2"><!-- //Convert Decimal to Binary function toBinStr(decval) { nbb=32; //32bit integers tmpChar=""; //Check if negative value neg = false; if (decval<0) { decval = -decval; neg = true; } //Binary Code of the positive value for(i=nbb-1;i>=0;i--) { if ((decval / Math.pow(2,i)) >= 1) { tmpChar = tmpChar + "1"; decval = decval % Math.pow(2,i); } else tmpChar = tmpChar + "0"; } if (neg) { //Complement Code tmp2=""; for (i=0;i<nbb;i++) { if (tmpChar.charAt(i)=="0") { tmp2 += "1" ; } else { tmp2 += "0"; } } tmpChar = tmp2; //Two's Complement Code tmp2=""; ovf = 1; i =nbb-1; while ((ovf==1)&&(i>=0)) { b = 1 ^ tmpChar.charAt(i); ovf = tmpChar.charAt(i); tmp2 = b.toString() + tmp2; i--; } for (;i>=0;i--) { tmp2 = tmpChar.charAt(i) + tmp2; } tmpChar = tmp2; } return tmpChar; } function TestIt(fm, operation) { o1 = fm.op1.value; o2 = fm.op2.value; //If EmptyFields||NonDigitFields { ErrorMsg("err") } reNonDigital = /[^\d\+-]/; if ((fm.op1.value=="")||(reNonDigital.exec(fm.op1.value)!=null)) { alert("Enter decimal value!"); fm.op1.focus(); return false; } if ((fm.op2.value=="")||(reNonDigital.exec(fm.op2.value)!=null)) { alert("Enter decimal value!"); fm.op2.focus(); return false; } //Calculate Result switch (operation) { case 6: fm.rs6.value = ~ fm.op1.value; fm.descr.value = " ~ " + toBinStr(o1) + " = " + toBinStr(fm.rs6.value); break; case 5: fm.rs5.value = fm.op1.value ^ fm.op2.value; fm.descr.value = toBinStr(o1) + " ^ " + toBinStr(o2) + " = " + toBinStr(fm.rs5.value); break; case 4: fm.rs4.value = fm.op1.value | fm.op2.value; fm.descr.value = toBinStr(o1) + " | " + toBinStr(o2) + " = " + toBinStr(fm.rs4.value); break; case 3: fm.rs3.value = fm.op1.value & fm.op2.value; fm.descr.value = toBinStr(o1) + " & " + toBinStr(o2) + " = " + toBinStr(fm.rs3.value); break; case 2: fm.rs2.value = fm.op1.value << fm.op2.value; fm.descr.value = toBinStr(o1) + " << " + o2 + " = " + toBinStr(fm.rs2.value); break; case 1: fm.rs1.value = fm.op1.value >>> fm.op2.value; fm.descr.value = toBinStr(o1) + " >>> " + o2 + " = " + toBinStr(fm.rs1.value); break; case 0: default: fm.rs0.value = fm.op1.value >> fm.op2.value; fm.descr.value = toBinStr(o1) + " >> " + o2 + " = " + toBinStr(fm.rs0.value); } //Display Binary Operation return true; } // --> </script><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com--><form> <table align="center" border="1"> <tbody><tr> <th colspan="4" align="center">BITWISE OPERATORS</th> </tr> <tr> <td rowspan="7" align="center" valign="top"> <input type="text" name="op1" value="-9" size="20"></td> <td align="center"><input type="button" name="shftRS" value=" >> " onclick="TestIt(this.form, 0)"></td> <td rowspan="6" align="center" valign="top"> <input type="text" name="op2" value="1" size="20"> = </td> <td align="center"><input type="text" name="rs0" value="" size="20"></td> </tr> <tr> <td align="center"><input type="button" name="shftR" value=">>>" onclick="TestIt(this.form, 1)"></td> <td align="center"><input type="text" name="rs1" value="" size="20"></td> </tr> <tr> <td align="center"><input type="button" name="shftL" value=" << " onclick="TestIt(this.form, 2)"></td> <td align="center"><input type="text" name="rs2" value="" size="20"></td> </tr> <tr> <td align="center"><input type="button" name="bwAND" value=" & " onclick="TestIt(this.form, 3)"></td> <td align="center"><input type="text" name="rs3" value="" size="20"></td> </tr> <tr> <td align="center"><input type="button" name="bwOR" value=" | " onclick="TestIt(this.form, 4)"></td> <td align="center"><input type="text" name="rs4" value="" size="20"></td> </tr> <tr> <td align="center"><input type="button" name="bwXOR" value=" ^ " onclick="TestIt(this.form, 5)"></td> <td align="center"><input type="text" name="rs5" value="" size="20"></td> </tr> <tr> <td align="center"><input type="button" name="bwNOT" value=" ~ " onclick="TestIt(this.form, 6)"></td> <td align="center">--</td> <td align="center"><input type="text" name="rs6" value="" size="20"></td> </tr> <tr> <td colspan="4" align="center"><input type="text" name="descr" size="105" value=""></td> </tr> <tr> <td colspan="4" align="center"><input type="reset" name="reset" value="Reset"></td> </tr> </tbody></table></form><!-- This script downloaded from www.JavaScriptBank.com Come to view and download over 2000+ free javascript at www.JavaScriptBank.com-->