Question

How to use the Math.imul() to get the result of the C-like 32-bit multiplication of the two parameters in JavaScript

Answer 1

document.write("Math.imul(2, 2) = " + Math.imul(2, 2) + "<br />");
document.write("Math.imul(-2, -2) = " + Math.imul(-2, -2) + "<br />");
document.write("Math.imul(-1, 7) = " + Math.imul(-1, 7) + "<br />");
document.write("Math.imul(3, 6) = " + Math.imul(3, 6) + "<br />");
document.write("Math.imul(0xffffffff, 5) = " + Math.imul(0xffffffff, 5) + "<br />");
document.write("Math.imul(0xfffffffe, 5) = " + Math.imul(0xfffffffe, 5) + "<br />");


 
/*
run

Math.imul(2, 2) = 4
Math.imul(-2, -2) = 4
Math.imul(-1, 7) = -7
Math.imul(3, 6) = 18
Math.imul(0xffffffff, 5) = -5
Math.imul(0xfffffffe, 5) = -10
 
*/

 

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