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166 lines
13 KiB
166 lines
13 KiB
11 years ago
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// Copyright 2013 the V8 project authors. All rights reserved.
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// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions
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// are met:
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// 1. Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// 2. Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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description(
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"This test verifies that the bit twiddling done in JavaScriptCore's integer machinery works correctly on the current platform."
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);
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shouldBe("(-1).toString()", '"-1"');
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shouldBe("(0).toString()", '"0"');
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shouldBe("(-0).toString()", '"0"');
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debug("");
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var answers = [
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['"-128"', '"-129"', '"127"', '"128"'],
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['"-256"', '"-257"', '"255"', '"256"'],
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['"-512"', '"-513"', '"511"', '"512"'],
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['"-1024"', '"-1025"', '"1023"', '"1024"'],
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['"-2048"', '"-2049"', '"2047"', '"2048"'],
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['"-4096"', '"-4097"', '"4095"', '"4096"'],
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['"-8192"', '"-8193"', '"8191"', '"8192"'],
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['"-16384"', '"-16385"', '"16383"', '"16384"'],
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['"-32768"', '"-32769"', '"32767"', '"32768"'],
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['"-65536"', '"-65537"', '"65535"', '"65536"'],
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['"-131072"', '"-131073"', '"131071"', '"131072"'],
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['"-262144"', '"-262145"', '"262143"', '"262144"'],
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['"-524288"', '"-524289"', '"524287"', '"524288"'],
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['"-1048576"', '"-1048577"', '"1048575"', '"1048576"'],
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['"-2097152"', '"-2097153"', '"2097151"', '"2097152"'],
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['"-4194304"', '"-4194305"', '"4194303"', '"4194304"'],
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['"-8388608"', '"-8388609"', '"8388607"', '"8388608"'],
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['"-16777216"', '"-16777217"', '"16777215"', '"16777216"'],
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['"-33554432"', '"-33554433"', '"33554431"', '"33554432"'],
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['"-67108864"', '"-67108865"', '"67108863"', '"67108864"'],
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['"-134217728"', '"-134217729"', '"134217727"', '"134217728"'],
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['"-268435456"', '"-268435457"', '"268435455"', '"268435456"'],
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['"-536870912"', '"-536870913"', '"536870911"', '"536870912"'],
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['"-1073741824"', '"-1073741825"', '"1073741823"', '"1073741824"'],
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['"-2147483648"', '"-2147483649"', '"2147483647"', '"2147483648"'],
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['"-4294967296"', '"-4294967297"', '"4294967295"', '"4294967296"'],
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['"-8589934592"', '"-8589934593"', '"8589934591"', '"8589934592"'],
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['"-17179869184"', '"-17179869185"', '"17179869183"', '"17179869184"'],
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['"-34359738368"', '"-34359738369"', '"34359738367"', '"34359738368"'],
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['"-68719476736"', '"-68719476737"', '"68719476735"', '"68719476736"'],
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['"-137438953472"', '"-137438953473"', '"137438953471"', '"137438953472"'],
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['"-274877906944"', '"-274877906945"', '"274877906943"', '"274877906944"'],
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['"-549755813888"', '"-549755813889"', '"549755813887"', '"549755813888"'],
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['"-1099511627776"', '"-1099511627777"', '"1099511627775"', '"1099511627776"'],
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['"-2199023255552"', '"-2199023255553"', '"2199023255551"', '"2199023255552"'],
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['"-4398046511104"', '"-4398046511105"', '"4398046511103"', '"4398046511104"'],
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['"-8796093022208"', '"-8796093022209"', '"8796093022207"', '"8796093022208"'],
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['"-17592186044416"', '"-17592186044417"', '"17592186044415"', '"17592186044416"'],
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['"-35184372088832"', '"-35184372088833"', '"35184372088831"', '"35184372088832"'],
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['"-70368744177664"', '"-70368744177665"', '"70368744177663"', '"70368744177664"'],
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['"-140737488355328"', '"-140737488355329"', '"140737488355327"', '"140737488355328"'],
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['"-281474976710656"', '"-281474976710657"', '"281474976710655"', '"281474976710656"'],
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['"-562949953421312"', '"-562949953421313"', '"562949953421311"', '"562949953421312"'],
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['"-1125899906842624"', '"-1125899906842625"', '"1125899906842623"', '"1125899906842624"'],
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['"-2251799813685248"', '"-2251799813685249"', '"2251799813685247"', '"2251799813685248"'],
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['"-4503599627370496"', '"-4503599627370497"', '"4503599627370495"', '"4503599627370496"'],
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['"-9007199254740992"', '"-9007199254740992"', '"9007199254740991"', '"9007199254740992"'],
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['"-18014398509481984"', '"-18014398509481984"', '"18014398509481984"', '"18014398509481984"'],
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['"-36028797018963970"', '"-36028797018963970"', '"36028797018963970"', '"36028797018963970"'],
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['"-72057594037927940"', '"-72057594037927940"', '"72057594037927940"', '"72057594037927940"'],
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['"-144115188075855870"', '"-144115188075855870"', '"144115188075855870"', '"144115188075855870"'],
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['"-288230376151711740"', '"-288230376151711740"', '"288230376151711740"', '"288230376151711740"'],
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['"-576460752303423500"', '"-576460752303423500"', '"576460752303423500"', '"576460752303423500"'],
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['"-1152921504606847000"', '"-1152921504606847000"', '"1152921504606847000"', '"1152921504606847000"'],
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['"-2305843009213694000"', '"-2305843009213694000"', '"2305843009213694000"', '"2305843009213694000"'],
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['"-4611686018427388000"', '"-4611686018427388000"', '"4611686018427388000"', '"4611686018427388000"'],
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['"-9223372036854776000"', '"-9223372036854776000"', '"9223372036854776000"', '"9223372036854776000"'],
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['"-18446744073709552000"', '"-18446744073709552000"', '"18446744073709552000"', '"18446744073709552000"'],
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['"-36893488147419103000"', '"-36893488147419103000"', '"36893488147419103000"', '"36893488147419103000"'],
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['"-73786976294838210000"', '"-73786976294838210000"', '"73786976294838210000"', '"73786976294838210000"'],
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['"-147573952589676410000"', '"-147573952589676410000"', '"147573952589676410000"', '"147573952589676410000"'],
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['"-295147905179352830000"', '"-295147905179352830000"', '"295147905179352830000"', '"295147905179352830000"'],
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['"-590295810358705700000"', '"-590295810358705700000"', '"590295810358705700000"', '"590295810358705700000"'],
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['"-1.1805916207174113e+21"', '"-1.1805916207174113e+21"', '"1.1805916207174113e+21"', '"1.1805916207174113e+21"'],
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['"-2.3611832414348226e+21"', '"-2.3611832414348226e+21"', '"2.3611832414348226e+21"', '"2.3611832414348226e+21"'],
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['"-4.722366482869645e+21"', '"-4.722366482869645e+21"', '"4.722366482869645e+21"', '"4.722366482869645e+21"'],
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['"-9.44473296573929e+21"', '"-9.44473296573929e+21"', '"9.44473296573929e+21"', '"9.44473296573929e+21"'],
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['"-1.888946593147858e+22"', '"-1.888946593147858e+22"', '"1.888946593147858e+22"', '"1.888946593147858e+22"'],
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['"-3.777893186295716e+22"', '"-3.777893186295716e+22"', '"3.777893186295716e+22"', '"3.777893186295716e+22"'],
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['"-7.555786372591432e+22"', '"-7.555786372591432e+22"', '"7.555786372591432e+22"', '"7.555786372591432e+22"'],
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['"-1.5111572745182865e+23"', '"-1.5111572745182865e+23"', '"1.5111572745182865e+23"', '"1.5111572745182865e+23"'],
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['"-3.022314549036573e+23"', '"-3.022314549036573e+23"', '"3.022314549036573e+23"', '"3.022314549036573e+23"'],
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['"-6.044629098073146e+23"', '"-6.044629098073146e+23"', '"6.044629098073146e+23"', '"6.044629098073146e+23"'],
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['"-1.2089258196146292e+24"', '"-1.2089258196146292e+24"', '"1.2089258196146292e+24"', '"1.2089258196146292e+24"'],
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['"-2.4178516392292583e+24"', '"-2.4178516392292583e+24"', '"2.4178516392292583e+24"', '"2.4178516392292583e+24"'],
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['"-4.835703278458517e+24"', '"-4.835703278458517e+24"', '"4.835703278458517e+24"', '"4.835703278458517e+24"'],
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['"-9.671406556917033e+24"', '"-9.671406556917033e+24"', '"9.671406556917033e+24"', '"9.671406556917033e+24"'],
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['"-1.9342813113834067e+25"', '"-1.9342813113834067e+25"', '"1.9342813113834067e+25"', '"1.9342813113834067e+25"'],
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['"-3.8685626227668134e+25"', '"-3.8685626227668134e+25"', '"3.8685626227668134e+25"', '"3.8685626227668134e+25"'],
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['"-7.737125245533627e+25"', '"-7.737125245533627e+25"', '"7.737125245533627e+25"', '"7.737125245533627e+25"'],
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['"-1.5474250491067253e+26"', '"-1.5474250491067253e+26"', '"1.5474250491067253e+26"', '"1.5474250491067253e+26"'],
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['"-3.094850098213451e+26"', '"-3.094850098213451e+26"', '"3.094850098213451e+26"', '"3.094850098213451e+26"'],
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['"-6.189700196426902e+26"', '"-6.189700196426902e+26"', '"6.189700196426902e+26"', '"6.189700196426902e+26"'],
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['"-1.2379400392853803e+27"', '"-1.2379400392853803e+27"', '"1.2379400392853803e+27"', '"1.2379400392853803e+27"'],
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['"-2.4758800785707605e+27"', '"-2.4758800785707605e+27"', '"2.4758800785707605e+27"', '"2.4758800785707605e+27"'],
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['"-4.951760157141521e+27"', '"-4.951760157141521e+27"', '"4.951760157141521e+27"', '"4.951760157141521e+27"'],
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['"-9.903520314283042e+27"', '"-9.903520314283042e+27"', '"9.903520314283042e+27"', '"9.903520314283042e+27"'],
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['"-1.9807040628566084e+28"', '"-1.9807040628566084e+28"', '"1.9807040628566084e+28"', '"1.9807040628566084e+28"'],
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['"-3.961408125713217e+28"', '"-3.961408125713217e+28"', '"3.961408125713217e+28"', '"3.961408125713217e+28"'],
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['"-7.922816251426434e+28"', '"-7.922816251426434e+28"', '"7.922816251426434e+28"', '"7.922816251426434e+28"'],
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['"-1.5845632502852868e+29"', '"-1.5845632502852868e+29"', '"1.5845632502852868e+29"', '"1.5845632502852868e+29"'],
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['"-3.1691265005705735e+29"', '"-3.1691265005705735e+29"', '"3.1691265005705735e+29"', '"3.1691265005705735e+29"'],
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['"-6.338253001141147e+29"', '"-6.338253001141147e+29"', '"6.338253001141147e+29"', '"6.338253001141147e+29"'],
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['"-1.2676506002282294e+30"', '"-1.2676506002282294e+30"', '"1.2676506002282294e+30"', '"1.2676506002282294e+30"'],
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['"-2.535301200456459e+30"', '"-2.535301200456459e+30"', '"2.535301200456459e+30"', '"2.535301200456459e+30"'],
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['"-5.070602400912918e+30"', '"-5.070602400912918e+30"', '"5.070602400912918e+30"', '"5.070602400912918e+30"'],
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['"-1.0141204801825835e+31"', '"-1.0141204801825835e+31"', '"1.0141204801825835e+31"', '"1.0141204801825835e+31"'],
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['"-2.028240960365167e+31"', '"-2.028240960365167e+31"', '"2.028240960365167e+31"', '"2.028240960365167e+31"'],
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['"-4.056481920730334e+31"', '"-4.056481920730334e+31"', '"4.056481920730334e+31"', '"4.056481920730334e+31"'],
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['"-8.112963841460668e+31"', '"-8.112963841460668e+31"', '"8.112963841460668e+31"', '"8.112963841460668e+31"'],
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['"-1.6225927682921336e+32"', '"-1.6225927682921336e+32"', '"1.6225927682921336e+32"', '"1.6225927682921336e+32"'],
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['"-3.2451855365842673e+32"', '"-3.2451855365842673e+32"', '"3.2451855365842673e+32"', '"3.2451855365842673e+32"'],
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['"-6.490371073168535e+32"', '"-6.490371073168535e+32"', '"6.490371073168535e+32"', '"6.490371073168535e+32"'],
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['"-1.298074214633707e+33"', '"-1.298074214633707e+33"', '"1.298074214633707e+33"', '"1.298074214633707e+33"'],
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['"-2.596148429267414e+33"', '"-2.596148429267414e+33"', '"2.596148429267414e+33"', '"2.596148429267414e+33"'],
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['"-5.192296858534828e+33"', '"-5.192296858534828e+33"', '"5.192296858534828e+33"', '"5.192296858534828e+33"'],
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['"-1.0384593717069655e+34"', '"-1.0384593717069655e+34"', '"1.0384593717069655e+34"', '"1.0384593717069655e+34"'],
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['"-2.076918743413931e+34"', '"-2.076918743413931e+34"', '"2.076918743413931e+34"', '"2.076918743413931e+34"'],
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['"-4.153837486827862e+34"', '"-4.153837486827862e+34"', '"4.153837486827862e+34"', '"4.153837486827862e+34"'],
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['"-8.307674973655724e+34"', '"-8.307674973655724e+34"', '"8.307674973655724e+34"', '"8.307674973655724e+34"'],
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['"-1.661534994731145e+35"', '"-1.661534994731145e+35"', '"1.661534994731145e+35"', '"1.661534994731145e+35"'],
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['"-3.32306998946229e+35"', '"-3.32306998946229e+35"', '"3.32306998946229e+35"', '"3.32306998946229e+35"'],
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['"-6.64613997892458e+35"', '"-6.64613997892458e+35"', '"6.64613997892458e+35"', '"6.64613997892458e+35"'],
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['"-1.329227995784916e+36"', '"-1.329227995784916e+36"', '"1.329227995784916e+36"', '"1.329227995784916e+36"'],
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['"-2.658455991569832e+36"', '"-2.658455991569832e+36"', '"2.658455991569832e+36"', '"2.658455991569832e+36"'],
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['"-5.316911983139664e+36"', '"-5.316911983139664e+36"', '"5.316911983139664e+36"', '"5.316911983139664e+36"'],
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['"-1.0633823966279327e+37"', '"-1.0633823966279327e+37"', '"1.0633823966279327e+37"', '"1.0633823966279327e+37"'],
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['"-2.1267647932558654e+37"', '"-2.1267647932558654e+37"', '"2.1267647932558654e+37"', '"2.1267647932558654e+37"'],
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['"-4.253529586511731e+37"', '"-4.253529586511731e+37"', '"4.253529586511731e+37"', '"4.253529586511731e+37"'],
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['"-8.507059173023462e+37"', '"-8.507059173023462e+37"', '"8.507059173023462e+37"', '"8.507059173023462e+37"'],
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['"-1.7014118346046923e+38"', '"-1.7014118346046923e+38"', '"1.7014118346046923e+38"', '"1.7014118346046923e+38"']
|
||
|
|
];
|
||
|
|
|
||
|
|
for (var valueBits = 8; valueBits <= 128; valueBits++) {
|
||
|
|
debug("bits used to store value: " + valueBits);
|
||
|
|
var max = Math.pow(2, valueBits - 1) - 1;
|
||
|
|
var min = -Math.pow(2, valueBits - 1);
|
||
|
|
shouldBe("min.toString()", answers[valueBits-8][0]);
|
||
|
|
shouldBe("(min - 1).toString()", answers[valueBits-8][1]);
|
||
|
|
shouldBe("max.toString()", answers[valueBits-8][2]);
|
||
|
|
shouldBe("(max + 1).toString()", answers[valueBits-8][3]);
|
||
|
|
}
|