LCOV - code coverage report
Current view: directory - js/src/v8-dtoa - v8-dtoa.cc (source / functions) Found Hit Coverage
Test: app.info Lines: 20 11 55.0 %
Date: 2012-06-02 Functions: 1 1 100.0 %

       1                 : // Copyright 2010 the V8 project authors. All rights reserved.
       2                 : // Redistribution and use in source and binary forms, with or without
       3                 : // modification, are permitted provided that the following conditions are
       4                 : // met:
       5                 : //
       6                 : //     * Redistributions of source code must retain the above copyright
       7                 : //       notice, this list of conditions and the following disclaimer.
       8                 : //     * Redistributions in binary form must reproduce the above
       9                 : //       copyright notice, this list of conditions and the following
      10                 : //       disclaimer in the documentation and/or other materials provided
      11                 : //       with the distribution.
      12                 : //     * Neither the name of Google Inc. nor the names of its
      13                 : //       contributors may be used to endorse or promote products derived
      14                 : //       from this software without specific prior written permission.
      15                 : //
      16                 : // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      17                 : // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      18                 : // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      19                 : // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      20                 : // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      21                 : // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      22                 : // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      23                 : // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      24                 : // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      25                 : // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      26                 : // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      27                 : 
      28                 : // MOZ: this file was called dtoa.cc, but that clashed in the build with
      29                 : // the file dtoa.c in SpiderMonkey, so this file was renamed v8-dtoa.cc.
      30                 : 
      31                 : #include <math.h>
      32                 : 
      33                 : #include "v8.h"
      34                 : #include "dtoa.h"
      35                 : #include "double.h"
      36                 : #include "fast-dtoa.h"
      37                 : 
      38                 : namespace v8 {
      39                 : namespace internal {
      40                 : 
      41          257335 : bool DoubleToAscii(double v, DtoaMode mode, int requested_digits,
      42                 :                    Vector<char> buffer, int* sign, int* length, int* point) {
      43          257335 :   ASSERT(!Double(v).IsSpecial());
      44          257335 :   ASSERT(mode == DTOA_SHORTEST || requested_digits >= 0);
      45                 : 
      46          257335 :   if (Double(v).Sign() < 0) {
      47           45014 :     *sign = 1;
      48           45014 :     v = -v;
      49                 :   } else {
      50          212321 :     *sign = 0;
      51                 :   }
      52                 : 
      53          257335 :   if (v == 0) {
      54               0 :     buffer[0] = '0';
      55               0 :     buffer[1] = '\0';
      56               0 :     *length = 1;
      57               0 :     *point = 1;
      58               0 :     return true;
      59                 :   }
      60                 : 
      61          257335 :   if (mode == DTOA_PRECISION && requested_digits == 0) {
      62               0 :     buffer[0] = '\0';
      63               0 :     *length = 0;
      64               0 :     return true;
      65                 :   }
      66                 : 
      67          257335 :   switch (mode) {
      68                 :     case DTOA_SHORTEST:
      69          257335 :       return FastDtoa(v, buffer, length, point);
      70                 :     case DTOA_FIXED:
      71                 :       // MOZ: should never happen.
      72                 :       //return FastFixedDtoa(v, requested_digits, buffer, length, point);
      73                 :     default:
      74                 :       break;
      75                 :   }
      76               0 :   return false;
      77                 : }
      78                 : 
      79                 : } }  // namespace v8::internal

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