131 lines · python
1"""2Test floating point expressions with zero, NaN, dernormalized and infinite3numbers.4"""5 6import lldb7from lldbsuite.test.lldbtest import *8from lldbsuite.test import lldbutil9 10 11class FPNaNTestCase(TestBase):12 def setUp(self):13 # Call super's setUp().14 TestBase.setUp(self)15 # Find the line number to break inside main().16 self.line = line_number("main.cpp", "// Set break point at this line.")17 18 def test(self):19 self.build()20 exe = self.getBuildArtifact("a.out")21 self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)22 23 # Break inside the main.24 lldbutil.run_break_set_by_file_and_line(25 self, "main.cpp", self.line, num_expected_locations=126 )27 28 self.runCmd("run", RUN_SUCCEEDED)29 # Zero and denorm30 self.expect(31 "expr +0.0",32 VARIABLES_DISPLAYED_CORRECTLY,33 substrs=["double", "0"],34 )35 self.expect(36 "expr -0.0",37 VARIABLES_DISPLAYED_CORRECTLY,38 substrs=["double", "0"],39 )40 self.expect(41 "expr 0.0 / 0",42 VARIABLES_DISPLAYED_CORRECTLY,43 substrs=["double", "NaN"],44 )45 self.expect(46 "expr 0 / 0.0",47 VARIABLES_DISPLAYED_CORRECTLY,48 substrs=["double", "NaN"],49 )50 self.expect(51 "expr 1 / +0.0",52 VARIABLES_DISPLAYED_CORRECTLY,53 substrs=["double", "+Inf"],54 )55 self.expect(56 "expr 1 / -0.0",57 VARIABLES_DISPLAYED_CORRECTLY,58 substrs=["double", "-Inf"],59 )60 self.expect(61 "expr +0.0 / +0.0 != +0.0 / +0.0",62 VARIABLES_DISPLAYED_CORRECTLY,63 substrs=["bool", "true"],64 )65 self.expect(66 "expr -1.f * 0",67 VARIABLES_DISPLAYED_CORRECTLY,68 substrs=["float", "-0"],69 )70 self.expect(71 "expr 0x0.123p-1",72 VARIABLES_DISPLAYED_CORRECTLY,73 substrs=["double", "0.0355224609375"],74 )75 # NaN76 self.expect(77 "expr fnan < fnan",78 VARIABLES_DISPLAYED_CORRECTLY,79 substrs=["bool", "false"],80 )81 self.expect(82 "expr fnan <= fnan",83 VARIABLES_DISPLAYED_CORRECTLY,84 substrs=["bool", "false"],85 )86 self.expect(87 "expr fnan > fnan",88 VARIABLES_DISPLAYED_CORRECTLY,89 substrs=["bool", "false"],90 )91 self.expect(92 "expr fnan >= fnan",93 VARIABLES_DISPLAYED_CORRECTLY,94 substrs=["bool", "false"],95 )96 self.expect(97 "expr fnan == fnan",98 VARIABLES_DISPLAYED_CORRECTLY,99 substrs=["bool", "false"],100 )101 self.expect(102 "expr fnan != fnan",103 VARIABLES_DISPLAYED_CORRECTLY,104 substrs=["bool", "true"],105 )106 self.expect(107 "expr 1.0 <= fnan",108 VARIABLES_DISPLAYED_CORRECTLY,109 substrs=["bool", "false"],110 )111 self.expect(112 "expr 1.0f < fnan",113 VARIABLES_DISPLAYED_CORRECTLY,114 substrs=["bool", "false"],115 )116 self.expect(117 "expr 1.0f != fnan",118 VARIABLES_DISPLAYED_CORRECTLY,119 substrs=["bool", "true"],120 )121 self.expect(122 "expr (unsigned int) fdenorm",123 VARIABLES_DISPLAYED_CORRECTLY,124 substrs=["int", "0"],125 )126 self.expect(127 "expr (unsigned int) (1.0f + fdenorm)",128 VARIABLES_DISPLAYED_CORRECTLY,129 substrs=["int", "1"],130 )131