src/v8/test/mjsunit/asm/math-abs.js

   1 // Copyright 2014 the V8 project authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 function Module(stdlib) {
   6   "use asm";
   7
   8   var abs = stdlib.Math.abs;
   9
  10   // f: double -> double
  11   function f(a) {
  12     a = +a;
  13     return +abs(a);
  14   }
  15
  16   // g: unsigned -> double
  17   function g(a) {
  18     a = a>>>0;
  19     return +abs(a);
  20   }
  21
  22   // h: signed -> double
  23   function h(a) {
  24     a = a|0;
  25     return +abs(a);
  26   }
  27
  28   return { f: f, g: g, h: h };
  29 }
  30
  31 var m = Module({ Math: Math });
  32 var f = m.f;
  33 var g = m.g;
  34 var h = m.h;
  35
  36 assertTrue(isNaN(f(NaN)));
  37 assertTrue(isNaN(f(undefined)));
  38 assertTrue(isNaN(f(function() {})));
  39
  40 assertEquals("Infinity", String(1/f(0)));
  41 assertEquals("Infinity", String(1/f(-0)));
  42 assertEquals("Infinity", String(f(Infinity)));
  43 assertEquals("Infinity", String(f(-Infinity)));
  44
  45 assertEquals(0,   f(0));
  46 assertEquals(0.1, f(0.1));
  47 assertEquals(0.5, f(0.5));
  48 assertEquals(0.1, f(-0.1));
  49 assertEquals(0.5, f(-0.5));
  50 assertEquals(1,   f(1));
  51 assertEquals(1.1, f(1.1));
  52 assertEquals(1.5, f(1.5));
  53 assertEquals(1,   f(-1));
  54 assertEquals(1.1, f(-1.1));
  55 assertEquals(1.5, f(-1.5));
  56
  57 assertEquals(0,          g(0));
  58 assertEquals(0,          g(0.1));
  59 assertEquals(0,          g(0.5));
  60 assertEquals(0,          g(-0.1));
  61 assertEquals(0,          g(-0.5));
  62 assertEquals(1,          g(1));
  63 assertEquals(1,          g(1.1));
  64 assertEquals(1,          g(1.5));
  65 assertEquals(4294967295, g(-1));
  66 assertEquals(4294967295, g(-1.1));
  67 assertEquals(4294967295, g(-1.5));
  68
  69 assertEquals(0, h(0));
  70 assertEquals(0, h(0.1));
  71 assertEquals(0, h(0.5));
  72 assertEquals(0, h(-0.1));
  73 assertEquals(0, h(-0.5));
  74 assertEquals(1, h(1));
  75 assertEquals(1, h(1.1));
  76 assertEquals(1, h(1.5));
  77 assertEquals(1, h(-1));
  78 assertEquals(1, h(-1.1));
  79 assertEquals(1, h(-1.5));
  80
  81 assertEquals(Number.MIN_VALUE, f(Number.MIN_VALUE));
  82 assertEquals(Number.MIN_VALUE, f(-Number.MIN_VALUE));
  83 assertEquals(Number.MAX_VALUE, f(Number.MAX_VALUE));
  84 assertEquals(Number.MAX_VALUE, f(-Number.MAX_VALUE));