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"""
Test floating point expressions with zero, NaN, dernormalized and infinite
numbers.
"""
import lldb
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class FPNaNTestCase(TestBase):
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.line = line_number("main.cpp", "// Set break point at this line.")
def test(self):
self.build()
exe = self.getBuildArtifact("a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Break inside the main.
lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", self.line, num_expected_locations=1
)
self.runCmd("run", RUN_SUCCEEDED)
# Zero and denorm
self.expect(
"expr +0.0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["double", "0"],
)
self.expect(
"expr -0.0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["double", "0"],
)
self.expect(
"expr 0.0 / 0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["double", "NaN"],
)
self.expect(
"expr 0 / 0.0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["double", "NaN"],
)
self.expect(
"expr 1 / +0.0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["double", "+Inf"],
)
self.expect(
"expr 1 / -0.0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["double", "-Inf"],
)
self.expect(
"expr +0.0 / +0.0 != +0.0 / +0.0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "true"],
)
self.expect(
"expr -1.f * 0",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["float", "-0"],
)
self.expect(
"expr 0x0.123p-1",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["double", "0.0355224609375"],
)
# NaN
self.expect(
"expr fnan < fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "false"],
)
self.expect(
"expr fnan <= fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "false"],
)
self.expect(
"expr fnan > fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "false"],
)
self.expect(
"expr fnan >= fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "false"],
)
self.expect(
"expr fnan == fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "false"],
)
self.expect(
"expr fnan != fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "true"],
)
self.expect(
"expr 1.0 <= fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "false"],
)
self.expect(
"expr 1.0f < fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "false"],
)
self.expect(
"expr 1.0f != fnan",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["bool", "true"],
)
self.expect(
"expr (unsigned int) fdenorm",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["int", "0"],
)
self.expect(
"expr (unsigned int) (1.0f + fdenorm)",
VARIABLES_DISPLAYED_CORRECTLY,
substrs=["int", "1"],
)
|
