1 /*

     2  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

     3  * 

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions

     6  * are met:

     7  * 

     8  *   - Redistributions of source code must retain the above copyright

     9  *     notice, this list of conditions and the following disclaimer.

    10  * 

    11  *   - Redistributions in binary form must reproduce the above copyright

    12  *     notice, this list of conditions and the following disclaimer in the

    13  *     documentation and/or other materials provided with the distribution.

    14  * 

    15  *   - Neither the name of Oracle nor the names of its

    16  *     contributors may be used to endorse or promote products derived

    17  *     from this software without specific prior written permission.

    18  * 

    19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

    20  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    21  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

    23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

    27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

    28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

    29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    30  */

    31 

    32 

    33 function bench(name, func) {

    34     var start = Date.now();

    35     for (var iter = 0; iter < 5000000; iter++) {

    36         func();

    37     }

    38     print(name + "\t" + (Date.now() - start));

    39 }

    40 

    41 function uint32(value) {

    42     return function() {

    43         value >>> 0;

    44         value >>> 0;

    45         value >>> 0;

    46         value >>> 0;

    47         value >>> 0;

    48         value >>> 0;

    49         value >>> 0;

    50         value >>> 0;

    51         value >>> 0;

    52         value >>> 0;

    53         value >>> 0;

    54         value >>> 0;

    55         value >>> 0;

    56         value >>> 0;

    57         value >>> 0;

    58     };

    59 }

    60 

    61 function int32(value) {

    62     return function() {

    63         value >> 0;

    64         value >> 0;

    65         value >> 0;

    66         value >> 0;

    67         value >> 0;

    68         value >> 0;

    69         value >> 0;

    70         value >> 0;

    71         value >> 0;

    72         value >> 0;

    73         value >> 0;

    74         value >> 0;

    75         value >> 0;

    76         value >> 0;

    77         value >> 0;

    78     };

    79 }

    80 

    81 print("\nToUint32");

    82 for (var i = 1; i < 3; i++) {

    83     bench("infinity      ", uint32(Infinity));

    84     bench("infinity neg  ", uint32(-Infinity));

    85     bench("nan           ", uint32(NaN));

    86     bench("small         ", uint32(1));

    87     bench("small neg     ", uint32(-1));

    88     bench("small frac    ", uint32(1.5));

    89     bench("small neg frac", uint32(-1.5));

    90     bench("large         ", uint32(9223372036854775807));

    91     bench("large neg     ", uint32(-9223372036854775808));

    92 }

    93 

    94 print("\nToInt32");

    95 for (var i = 1; i < 3; i++) {

    96     bench("infinity      ", int32(Infinity));

    97     bench("infinity neg  ", int32(-Infinity));

    98     bench("nan           ", int32(NaN));

    99     bench("small         ", int32(1));

   100     bench("small neg     ", int32(-1));

   101     bench("small frac    ", int32(1.5));

   102     bench("small neg frac", int32(-1.5));

   103     bench("large         ", int32(9223372036854775807));

   104     bench("large neg     ", int32(-9223372036854775808));

   105 }

   106 

   107