Fix testHelperFunctions int64 overflow (test bug) + strengthen coverage (#487)

test_t_abs64 used bare 2147483648 literals whose width is
implementation-defined: 32-bit on ILP32/LLP64 (win32), 64-bit

Fix testHelperFunctions int64 overflow (test bug) + strengthen coverage (#487)

test_t_abs64 used bare 2147483648 literals whose width is
implementation-defined: 32-bit on ILP32/LLP64 (win32), 64-bit on LP64.
"2147483648 << 1" and "* 2" therefore overflowed to 0 in 32-bit
arithmetic before being widened to sal_Int64, so the n != 0 assertions
failed. Latent on 64-bit Linux, surfaced on the win32 test migration.

- test1/test2: force 64-bit operands (sal_Int64(...)), matching the
already-correct test1_1 idiom; test0 (the deliberate 32-bit narrowing
overflow demo) is left untouched.
- t_abs64 printf: %ld -> SAL_PRIdINT64 (wrong wherever long is 32-bit).
- Replace weak "> 0" / "!= 0" checks with exact-value assertions written
as independent constants, so a regression to 32-bit arithmetic is
actually caught.
- Add test_abs64_range: exercises 0, +/-1, +/-SAL_MAX_INT64 exactly and
documents the SAL_MIN_INT64 two's-complement boundary.

Test-only, C++98, platform-neutral; no shipping source touched.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

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pre-commit auto remove trailing whitespace from cxx files (#383)

Another big auto clean up. So many lines !!

Another one bites the dust

https://www.youtube.com/watch?v=rY0WxgSXdEE

Co-authored-by:

pre-commit auto remove trailing whitespace from cxx files (#383)

Another big auto clean up. So many lines !!

Another one bites the dust

https://www.youtube.com/watch?v=rY0WxgSXdEE

Co-authored-by: Matthias Seidel <mseidel@apache.org>

show more ...