nv-bit-1-on-32

• a simple bit-array FOR big-size (> 256M)

• pure js

• IF size <=512M USE using_smia.creat FOR speed

• IF size >=512M AND <= 3G~4G USE using_i32a.creat

• IF size >=4G , it CANT work, it maybe crash (based on your v8 AND runtime start-up config)

• its used for test pure-js bloom-filter , normally USELESS

• its faster than nv-bit-1(which is generated by script). this is wrote by human.

install

• npm install nv-bit-1-on-32

splitted

usage

  const { using_smia,using_i32a}   = require("nv-bit-1-on-32");

example

small

      // <=512M

            const {sync} = require("nv-facutil-simple-test")

            var creat = using_smia.creat;

            var sz =    2**29;             
            var b1 = creat(sz);

	//%DebugPrint(b1)  packed_smi

	var f =(cnt) => {
	   for(let i=0;i<cnt;++i)    {b1.set(i,i%2)}
	   for(let i=0;i<cnt;++i)    {if(b1.get(i) !== (i%2)) {throw(i)}}
	}

	var res = sync(1,f,2**29)
	console.log(res)
	/*
	{ rounds: 1, f: [Function: f], costed: 2734.416069984436 }
	*/
	//%DebugPrint(b1)  packed_smi

big

      > 512M

            var creat = using_i32a.creat;

            var ab = new ArrayBuffer(2**31)

            var si =    0;
            var sz =    2**31;             
            
            var b1 = creat(ab,si,sz);

	var f =(cnt) => {
	   for(let i=0;i<cnt;++i)    {b1.set(i,i%2)}
	   for(let i=0;i<cnt;++i)    {if(b1.get(i) !== (i%2)) {throw(i)}}
	}

	console.log(sync(1,f,2**31))

            /*
                 { rounds: 1, f: [Function: f], costed: 47496.44641697407 }
            */
            

METHODS

APIS

•         using\_smia.creat(size): Array

•         using\_i32a.creat(ab:ArrayBuffer, si=0, size): Int32Array

LICENSE

• ISC