derek.holloway
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108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
#include "clang/AST/Type.h"
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#include "llvm/ADT/APSInt.h"
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#include "llvm/ADT/SmallString.h"
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#include "gtest/gtest.h"
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using clang::FixedPointValueToString;
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using llvm::APSInt;
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using llvm::SmallString;
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namespace {
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TEST(FixedPointString, DifferentTypes) {
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SmallString<64> S;
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FixedPointValueToString(S, APSInt::get(320), 7);
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ASSERT_STREQ(S.c_str(), "2.5");
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S.clear();
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FixedPointValueToString(S, APSInt::get(0), 7);
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ASSERT_STREQ(S.c_str(), "0.0");
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// signed short _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(16, /*Unsigned=*/false), 7);
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ASSERT_STREQ(S.c_str(), "255.9921875");
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// signed _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(32, /*Unsigned=*/false), 15);
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ASSERT_STREQ(S.c_str(), "65535.999969482421875");
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// signed long _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(64, /*Unsigned=*/false), 31);
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ASSERT_STREQ(S.c_str(), "4294967295.9999999995343387126922607421875");
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// unsigned short _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(16, /*Unsigned=*/true), 8);
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ASSERT_STREQ(S.c_str(), "255.99609375");
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// unsigned _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(32, /*Unsigned=*/true), 16);
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ASSERT_STREQ(S.c_str(), "65535.9999847412109375");
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// unsigned long _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(64, /*Unsigned=*/true), 32);
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ASSERT_STREQ(S.c_str(), "4294967295.99999999976716935634613037109375");
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// signed short _Fract
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(8, /*Unsigned=*/false), 7);
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ASSERT_STREQ(S.c_str(), "0.9921875");
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// signed _Fract
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(16, /*Unsigned=*/false), 15);
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ASSERT_STREQ(S.c_str(), "0.999969482421875");
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// signed long _Fract
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(32, /*Unsigned=*/false), 31);
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ASSERT_STREQ(S.c_str(), "0.9999999995343387126922607421875");
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// unsigned short _Fract
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(8, /*Unsigned=*/true), 8);
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ASSERT_STREQ(S.c_str(), "0.99609375");
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// unsigned _Fract
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(16, /*Unsigned=*/true), 16);
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ASSERT_STREQ(S.c_str(), "0.9999847412109375");
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// unsigned long _Fract
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S.clear();
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FixedPointValueToString(S, APSInt::getMaxValue(32, /*Unsigned=*/true), 32);
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ASSERT_STREQ(S.c_str(), "0.99999999976716935634613037109375");
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}
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TEST(FixedPointString, Negative) {
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SmallString<64> S;
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FixedPointValueToString(S, APSInt::get(-320), 7);
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ASSERT_STREQ(S.c_str(), "-2.5");
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S.clear();
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FixedPointValueToString(S, APSInt::get(-64), 7);
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ASSERT_STREQ(S.c_str(), "-0.5");
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// signed short _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMinValue(16, /*Unsigned=*/false), 7);
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ASSERT_STREQ(S.c_str(), "-256.0");
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// signed _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMinValue(32, /*Unsigned=*/false), 15);
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ASSERT_STREQ(S.c_str(), "-65536.0");
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// signed long _Accum
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S.clear();
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FixedPointValueToString(S, APSInt::getMinValue(64, /*Unsigned=*/false), 31);
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ASSERT_STREQ(S.c_str(), "-4294967296.0");
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}
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} // namespace
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