build: fix werror build with clang
../subprojects/orc/orc-test/orcarray.c:230:47: error: taking the absolute value of unsigned type 'unsigned int' has no effect [-Werror,-Wabsolute-value]
if ((a[i] < 0.0) == (b[i] < 0.0) && abs(*(orc_uint32 *)&a[i] - *(orc_uint32 *)&b[i]) <= 2) continue;
^
../subprojects/orc/orc-test/orcarray.c:230:47: note: remove the call to 'abs' since unsigned values cannot be negative
if ((a[i] < 0.0) == (b[i] < 0.0) && abs(*(orc_uint32 *)&a[i] - *(orc_uint32 *)&b[i]) <= 2) continue;
^~~
../subprojects/orc/orc-test/orcarray.c:247:47: error: taking the absolute value of unsigned type 'unsigned long' has no effect [-Werror,-Wabsolute-value]
if ((a[i] < 0.0) == (b[i] < 0.0) && abs(*(orc_uint64 *)&a[i] - *(orc_uint64 *)&b[i]) <= 2) continue;
^
../subprojects/orc/orc-test/orcarray.c:247:47: note: remove the call to 'abs' since unsigned values cannot be negative
if ((a[i] < 0.0) == (b[i] < 0.0) && abs(*(orc_uint64 *)&a[i] - *(orc_uint64 *)&b[i]) <= 2) continue;
^~~
../subprojects/orc/orc-test/orctest.c:525:63: error: taking the absolute value of unsigned type 'unsigned int' has no effect [-Werror,-Wabsolute-value]
if ((*(float *)ptr1 < 0.0) == (*(float *)ptr2 < 0.0) && abs(*(orc_uint32 *)ptr1 - *(orc_uint32 *)ptr2) <= 2) return TRUE;
^
../subprojects/orc/orc-test/orctest.c:525:63: note: remove the call to 'abs' since unsigned values cannot be negative
if ((*(float *)ptr1 < 0.0) == (*(float *)ptr2 < 0.0) && abs(*(orc_uint32 *)ptr1 - *(orc_uint32 *)ptr2) <= 2) return TRUE;
^~~
../subprojects/orc/orc-test/orctest.c:530:65: error: taking the absolute value of unsigned type 'unsigned long' has no effect [-Werror,-Wabsolute-value]
if ((*(double *)ptr1 < 0.0) == (*(double *)ptr2 < 0.0) && abs(*(orc_uint64 *)ptr1 - *(orc_uint64 *)ptr2) <= 2) return TRUE;
^
../subprojects/orc/orc-test/orctest.c:530:65: note: remove the call to 'abs' since unsigned values cannot be negative
if ((*(double *)ptr1 < 0.0) == (*(double *)ptr2 < 0.0) && abs(*(orc_uint64 *)ptr1 - *(orc_uint64 *)ptr2) <= 2) return TRUE;
^~~
Edited by Matthew Waters