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serialpi.html

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  • serialpi.html 576 B
    <html>
    <body>
    <script>
    //
    // serialpi.html
    // Neil Gershenfeld 11/24/18
    // pi calculation benchmark
    // pi = 3.14159265358979323846
    //
    function pi() {
       var points = 1e10
       var a = 0.5
       var b = 0.75
       var c = 0.25
       var pi = 0
       var tstart = Date.now()/1000
       for (var i = 1; i <= points; ++i)
          pi += a/((i-b)*(i-c))
       var tend = Date.now()/1000
       var mflops = points*5.0*1e-6/(tend-tstart)
       console.log('pi: '+pi)
       console.log('time: '+(tend-tstart).toFixed(1)+'s')
       console.log('estimated MFlops: '+mflops.toFixed(1))
       }
    pi()
    </script>
    </body>
    </html>