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test-json: check absolute and relative difference in floating point test

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The test fails under valgrind, so there was an exception for valgrind.
Unfortunately that check only works when valgrind-devel headers are
available during build. But it is possible to have just valgrind installed,
or simply install it after the build, and then "valgrind test-json" would
fail.

It also seems that even without valgrind, this fails on some arm32 CPUs.
Let's do the usual-style test for absolute and relative differences.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2018-12-21 22:49:53 +01:00 committed by Yu Watanabe
parent a92f2af28a
commit aa70783f55
1 changed files with 7 additions and 9 deletions
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16
src/test/test-json.c
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@ -1,9 +1,6 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#include <math.h>
#if HAVE_VALGRIND_VALGRIND_H
#include <valgrind/valgrind.h>
#endif
#include "alloc-util.h"
#include "fd-util.h"
@ -45,12 +42,13 @@ static void test_tokenizer(const char *data, ...) {
d = va_arg(ap, long double);
#if HAVE_VALGRIND_VALGRIND_H
if (!RUNNING_ON_VALGRIND)
#endif
/* Valgrind doesn't support long double calculations and automatically downgrades to 80bit:
* http://www.valgrind.org/docs/manual/manual-core.html#manual-core.limits */
assert_se(fabsl(d - v.real) < 0.001L);
/* Valgrind doesn't support long double calculations and automatically downgrades to 80bit:
* http://www.valgrind.org/docs/manual/manual-core.html#manual-core.limits.
* Some architectures might not support long double either.
*/
assert_se(fabsl(d - v.real) < 1e-10 ||
fabsl((d - v.real) / v.real) < 1e-10);
} else if (t == JSON_TOKEN_INTEGER) {
intmax_t i;