// setup and associated functions
const setOf = (count, callback) => {var a = [],i = 0; while (i < count) { a.push(callback(i ++)) } return a };
const rand = (min = 1, max = min + (min = 0)) => Math.random() * (max - min) + min;
const a = setOf(100009,i=>rand(-100000,100000));
var bigCount = 0;
function len(x,y,x1,y1){
var nx = x1 - x;
var ny = y1 - y;
return Math.sqrt(nx * nx + ny * ny);
}
function lenSlow(x,y,x1,y1){
var nx = x1 - x;
var ny = y1 - y;
return Math.hypot(nx,ny);
}
function lenEmpty(x,y,x1,y1){
return x;
}
// Test functions in same scope as above. None is in global scope
// Each function is copied 4 time and tests are performed randomly.
// c += length(... to ensure all code is executed.
// bigCount += c to ensure whole function is executed.
// 4 lines for each function to reduce a inlining skew
// all values are randomly generated doubles
// each function call returns a different result.
tests : [{
func : function (){
var i,c=0,a1,a2,a3,a4;
for (i = 0; i < 10000; i += 1) {
a1 = a[i];
a2 = a[i+1];
a3 = a[i+2];
a4 = a[i+3];
c += length(a1,a2,a3,a4);
c += length(a2,a3,a4,a1);
c += length(a3,a4,a1,a2);
c += length(a4,a1,a2,a3);
}
bigCount = (bigCount + c) % 1000;
},
name : "length64",
},{
func : function (){
var i,c=0,a1,a2,a3,a4;
for (i = 0; i < 10000; i += 1) {
a1 = a[i];
a2 = a[i+1];
a3 = a[i+2];
a4 = a[i+3];
c += lengthF(a1,a2,a3,a4);
c += lengthF(a2,a3,a4,a1);
c += lengthF(a3,a4,a1,a2);
c += lengthF(a4,a1,a2,a3);
}
bigCount = (bigCount + c) % 1000;
},
name : "length32",
},{
func : function (){
var i,c=0,a1,a2,a3,a4;
for (i = 0; i < 10000; i += 1) {
a1 = a[i];
a2 = a[i+1];
a3 = a[i+2];
a4 = a[i+3];
c += len(a1,a2,a3,a4);
c += len(a2,a3,a4,a1);
c += len(a3,a4,a1,a2);
c += len(a4,a1,a2,a3);
}
bigCount = (bigCount + c) % 1000;
},
name : "length JS",
},{
func : function (){
var i,c=0,a1,a2,a3,a4;
for (i = 0; i < 10000; i += 1) {
a1 = a[i];
a2 = a[i+1];
a3 = a[i+2];
a4 = a[i+3];
c += lenSlow(a1,a2,a3,a4);
c += lenSlow(a2,a3,a4,a1);
c += lenSlow(a3,a4,a1,a2);
c += lenSlow(a4,a1,a2,a3);
}
bigCount = (bigCount + c) % 1000;
},
name : "Length JS Slow",
},{
func : function (){
var i,c=0,a1,a2,a3,a4;
for (i = 0; i < 10000; i += 1) {
a1 = a[i];
a2 = a[i+1];
a3 = a[i+2];
a4 = a[i+3];
c += lenEmpty(a1,a2,a3,a4);
c += lenEmpty(a2,a3,a4,a1);
c += lenEmpty(a3,a4,a1,a2);
c += lenEmpty(a4,a1,a2,a3);
}
bigCount = (bigCount + c) % 1000;
},
name : "Empty",
}
],
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