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1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
2 // All Rights Reserved. | 2 // All Rights Reserved. |
3 // | 3 // |
4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
6 // met: | 6 // met: |
7 // | 7 // |
8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
10 // | 10 // |
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876 | 876 |
877 | 877 |
878 // ----------------------------------------------------------------------------- | 878 // ----------------------------------------------------------------------------- |
879 // Implementation of ExternalReference | 879 // Implementation of ExternalReference |
880 | 880 |
881 void ExternalReference::SetUp() { | 881 void ExternalReference::SetUp() { |
882 double_constants.min_int = kMinInt; | 882 double_constants.min_int = kMinInt; |
883 double_constants.one_half = 0.5; | 883 double_constants.one_half = 0.5; |
884 double_constants.minus_one_half = -0.5; | 884 double_constants.minus_one_half = -0.5; |
885 double_constants.canonical_non_hole_nan = base::OS::nan_value(); | 885 double_constants.canonical_non_hole_nan = base::OS::nan_value(); |
886 double_constants.the_hole_nan = BitCast<double>(kHoleNanInt64); | 886 double_constants.the_hole_nan = bit_cast<double>(kHoleNanInt64); |
887 double_constants.negative_infinity = -V8_INFINITY; | 887 double_constants.negative_infinity = -V8_INFINITY; |
888 double_constants.uint32_bias = | 888 double_constants.uint32_bias = |
889 static_cast<double>(static_cast<uint32_t>(0xFFFFFFFF)) + 1; | 889 static_cast<double>(static_cast<uint32_t>(0xFFFFFFFF)) + 1; |
890 | 890 |
891 math_exp_data_mutex = new base::Mutex(); | 891 math_exp_data_mutex = new base::Mutex(); |
892 } | 892 } |
893 | 893 |
894 | 894 |
895 void ExternalReference::InitializeMathExpData() { | 895 void ExternalReference::InitializeMathExpData() { |
896 // Early return? | 896 // Early return? |
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917 math_exp_constants_array[4] = | 917 math_exp_constants_array[4] = |
918 static_cast<double>(static_cast<int64_t>(3) << 51); | 918 static_cast<double>(static_cast<int64_t>(3) << 51); |
919 math_exp_constants_array[5] = 1 / constant3; | 919 math_exp_constants_array[5] = 1 / constant3; |
920 math_exp_constants_array[6] = 3.0000000027955394; | 920 math_exp_constants_array[6] = 3.0000000027955394; |
921 math_exp_constants_array[7] = 0.16666666685227835; | 921 math_exp_constants_array[7] = 0.16666666685227835; |
922 math_exp_constants_array[8] = 1; | 922 math_exp_constants_array[8] = 1; |
923 | 923 |
924 math_exp_log_table_array = new double[kTableSize]; | 924 math_exp_log_table_array = new double[kTableSize]; |
925 for (int i = 0; i < kTableSize; i++) { | 925 for (int i = 0; i < kTableSize; i++) { |
926 double value = std::pow(2, i / kTableSizeDouble); | 926 double value = std::pow(2, i / kTableSizeDouble); |
927 uint64_t bits = BitCast<uint64_t, double>(value); | 927 uint64_t bits = bit_cast<uint64_t, double>(value); |
928 bits &= (static_cast<uint64_t>(1) << 52) - 1; | 928 bits &= (static_cast<uint64_t>(1) << 52) - 1; |
929 double mantissa = BitCast<double, uint64_t>(bits); | 929 double mantissa = bit_cast<double, uint64_t>(bits); |
930 math_exp_log_table_array[i] = mantissa; | 930 math_exp_log_table_array[i] = mantissa; |
931 } | 931 } |
932 | 932 |
933 math_exp_data_initialized = true; | 933 math_exp_data_initialized = true; |
934 } | 934 } |
935 } | 935 } |
936 | 936 |
937 | 937 |
938 void ExternalReference::TearDownMathExpData() { | 938 void ExternalReference::TearDownMathExpData() { |
939 delete[] math_exp_constants_array; | 939 delete[] math_exp_constants_array; |
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1565 assembler_->RecordRelocInfo(RelocInfo::POSITION, state_.current_position); | 1565 assembler_->RecordRelocInfo(RelocInfo::POSITION, state_.current_position); |
1566 state_.written_position = state_.current_position; | 1566 state_.written_position = state_.current_position; |
1567 written = true; | 1567 written = true; |
1568 } | 1568 } |
1569 | 1569 |
1570 // Return whether something was written. | 1570 // Return whether something was written. |
1571 return written; | 1571 return written; |
1572 } | 1572 } |
1573 | 1573 |
1574 } } // namespace v8::internal | 1574 } } // namespace v8::internal |
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