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Fix test_prng_lg_range_zu() to work on 32-bit systems.

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This commit is contained in:
Jason Evans 2016-11-07 11:50:11 -08:00
parent cda59f9970
commit 5e0373c815
1 changed files with 10 additions and 10 deletions
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20
test/unit/prng.c
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@ -77,38 +77,38 @@ test_prng_lg_range_u64(void)
static void
test_prng_lg_range_zu(bool atomic)
{
uint64_t sa, sb, ra, rb;
size_t sa, sb, ra, rb;
unsigned lg_range;
sa = 42;
ra = prng_lg_range_zu(&sa, 64, atomic);
ra = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR), atomic);
sa = 42;
rb = prng_lg_range_zu(&sa, 64, atomic);
rb = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR), atomic);
assert_zu_eq(ra, rb,
"Repeated generation should produce repeated results");
sb = 42;
rb = prng_lg_range_zu(&sb, 64, atomic);
rb = prng_lg_range_zu(&sb, ZU(1) << (3 + LG_SIZEOF_PTR), atomic);
assert_zu_eq(ra, rb,
"Equivalent generation should produce equivalent results");
sa = 42;
ra = prng_lg_range_zu(&sa, 64, atomic);
rb = prng_lg_range_zu(&sa, 64, atomic);
ra = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR), atomic);
rb = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR), atomic);
assert_zu_ne(ra, rb,
"Full-width results must not immediately repeat");
sa = 42;
ra = prng_lg_range_zu(&sa, 64, atomic);
ra = prng_lg_range_zu(&sa, ZU(1) << (3 + LG_SIZEOF_PTR), atomic);
for (lg_range = (ZU(1) << (3 + LG_SIZEOF_PTR)) - 1; lg_range > 0;
lg_range--) {
sb = 42;
rb = prng_lg_range_zu(&sb, lg_range, atomic);
assert_zu_eq((rb & (SIZE_T_MAX << lg_range)),
0, "High order bits should be 0, lg_range=%u", lg_range);
assert_zu_eq(rb, (ra >> (64 - lg_range)),
"Expected high order bits of full-width result, "
"lg_range=%u", lg_range);
assert_zu_eq(rb, (ra >> ((ZU(1) << (3 + LG_SIZEOF_PTR)) -
lg_range)), "Expected high order bits of full-width "
"result, lg_range=%u", lg_range);
}
}