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Fix ulp distance calculation for numbers with different signs

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This is a simplification of the fix proposed in #2152, with the
critical function split out so that it can be tested directly,
without having to go through the ULP matcher.

Closes #2152
This commit is contained in:
Martin Hořeňovský
2021-07-26 22:01:04 +02:00
parent 6f21a3609c
commit 3d1cf95b32
19 changed files with 502 additions and 38 deletions
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24
tests/SelfTest/Baselines/tap.sw.approved.txt
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@@ -158,6 +158,14 @@ ok {test-number} -
ok {test-number} -
# #1954 - 7 arg template test case sig compiles - 5, 3, 1, 1, 1, 0, 0
ok {test-number} -
# #2152 - ULP checks between differently signed values were wrong - double
ok {test-number} - smallest_non_zero, WithinULP( -smallest_non_zero, 2 ) for: 0.0 is within 2 ULPs of -4.9406564584124654e-324 ([-1.4821969375237396e-323, 4.9406564584124654e-324])
# #2152 - ULP checks between differently signed values were wrong - double
ok {test-number} - smallest_non_zero, !WithinULP( -smallest_non_zero, 1 ) for: 0.0 not is within 1 ULPs of -4.9406564584124654e-324 ([-9.8813129168249309e-324, -0.0000000000000000e+00])
# #2152 - ULP checks between differently signed values were wrong - float
ok {test-number} - smallest_non_zero, WithinULP( -smallest_non_zero, 2 ) for: 0.0f is within 2 ULPs of -1.40129846e-45f ([-4.20389539e-45, 1.40129846e-45])
# #2152 - ULP checks between differently signed values were wrong - float
ok {test-number} - smallest_non_zero, !WithinULP( -smallest_non_zero, 1 ) for: 0.0f not is within 1 ULPs of -1.40129846e-45f ([-2.80259693e-45, -0.00000000e+00])
# #748 - captures with unexpected exceptions
not ok {test-number} - unexpected exception with message: 'answer := 42' with 1 message: 'expected exception'
# #748 - captures with unexpected exceptions
@@ -1155,6 +1163,8 @@ ok {test-number} - -10.f, WithinAbs( -9.6f, 0.5f ) for: -10.0f is within 0.5 of
# Floating point matchers: float
ok {test-number} - 1.f, WithinULP( 1.f, 0 ) for: 1.0f is within 0 ULPs of 1.00000000e+00f ([1.00000000e+00, 1.00000000e+00])
# Floating point matchers: float
ok {test-number} - -1.f, WithinULP( -1.f, 0 ) for: -1.0f is within 0 ULPs of -1.00000000e+00f ([-1.00000000e+00, -1.00000000e+00])
# Floating point matchers: float
ok {test-number} - nextafter( 1.f, 2.f ), WithinULP( 1.f, 1 ) for: 1.0f is within 1 ULPs of 1.00000000e+00f ([9.99999940e-01, 1.00000012e+00])
# Floating point matchers: float
ok {test-number} - 0.f, WithinULP( nextafter( 0.f, 1.f ), 1 ) for: 0.0f is within 1 ULPs of 1.40129846e-45f ([0.00000000e+00, 2.80259693e-45])
@@ -3703,6 +3713,18 @@ ok {test-number} - long_var == unsigned_short_var for: 1 == 1
ok {test-number} - long_var == unsigned_int_var for: 1 == 1
# comparisons between int variables
ok {test-number} - long_var == unsigned_long_var for: 1 == 1
# convertToBits
ok {test-number} - convertToBits( 0.f ) == 0 for: 0 == 0
# convertToBits
ok {test-number} - convertToBits( -0.f ) == ( 1ULL << 31 ) for: 2147483648 (0x<hex digits>) == 2147483648 (0x<hex digits>)
# convertToBits
ok {test-number} - convertToBits( 0. ) == 0 for: 0 == 0
# convertToBits
ok {test-number} - convertToBits( -0. ) == ( 1ULL << 63 ) for: 9223372036854775808 (0x<hex digits>) == 9223372036854775808 (0x<hex digits>)
# convertToBits
ok {test-number} - convertToBits( std::numeric_limits<float>::denorm_min() ) == 1 for: 1 == 1
# convertToBits
ok {test-number} - convertToBits( std::numeric_limits<double>::denorm_min() ) == 1 for: 1 == 1
# empty tags are not allowed
ok {test-number} - Catch::TestCaseInfo("", { "test with an empty tag", "[]" }, dummySourceLineInfo)
# erfc_inv
@@ -4220,5 +4242,5 @@ ok {test-number} - q3 == 23. for: 23.0 == 23.0
ok {test-number} -
# xmlentitycheck
ok {test-number} -
1..2109
1..2120