Module Name: src
Committed By: riastradh
Date: Mon May 6 17:53:43 UTC 2024
Modified Files:
src/tests/lib/libc/gen: t_floatunditf.c
Log Message:
tests/lib/libc/gen/t_floatunditf: Nix __HAVE_LONG_DOUBLE conditional.
Conversion from uint64_t to long double should work on all ports,
including those where long double is the same as double, i.e., where
__HAVE_LONG_DOUBLE is undefined.
Instead, conditionalize the test cases on how many bits of precision
long double has in the significand, according to LDBL_MANT_DIG. The
conditionals here should handle binary128, powerpc double-dekker
(~106-bit precision), x86 extended precision (80-bit), m68k extended
precision (80-bit), and VAX D (56-bit).
To generate a diff of this commit:
cvs rdiff -u -r1.6 -r1.7 src/tests/lib/libc/gen/t_floatunditf.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tests/lib/libc/gen/t_floatunditf.c
diff -u src/tests/lib/libc/gen/t_floatunditf.c:1.6 src/tests/lib/libc/gen/t_floatunditf.c:1.7
--- src/tests/lib/libc/gen/t_floatunditf.c:1.6 Tue Nov 4 00:20:19 2014
+++ src/tests/lib/libc/gen/t_floatunditf.c Mon May 6 17:53:43 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: t_floatunditf.c,v 1.6 2014/11/04 00:20:19 justin Exp $ */
+/* $NetBSD: t_floatunditf.c,v 1.7 2024/05/06 17:53:43 riastradh Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -26,15 +26,23 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
+#include <sys/cdefs.h>
+__RCSID("$NetBSD: t_floatunditf.c,v 1.7 2024/05/06 17:53:43 riastradh Exp $");
+
#include <atf-c.h>
+#include <float.h>
#include <inttypes.h>
#include <math.h>
-#ifdef __HAVE_LONG_DOUBLE
+#if LDBL_MANT_DIG < 53
+#error Unsupported long double format
+#endif
+
static const struct {
uint64_t u64;
long double ld;
} testcases[] = {
+#if LDBL_MANT_DIG >= 64
{ 0xffffffffffffffffULL, 0xf.fffffffffffffffp+60L },
{ 0xfffffffffffffffeULL, 0xf.ffffffffffffffep+60L },
{ 0xfffffffffffffffdULL, 0xf.ffffffffffffffdp+60L },
@@ -46,9 +54,12 @@ static const struct {
{ 0x7ffffffffffffffULL, 0xf.fffffffffffffep+55L },
{ 0x3ffffffffffffffULL, 0xf.fffffffffffffcp+54L },
{ 0x1ffffffffffffffULL, 0xf.fffffffffffff8p+53L },
+#endif
+#if LDBL_MANT_DIG >= 56
{ 0xffffffffffffffULL, 0xf.fffffffffffffp+52L },
{ 0x7fffffffffffffULL, 0xf.ffffffffffffep+51L },
{ 0x3fffffffffffffULL, 0xf.ffffffffffffcp+50L },
+#endif
{ 0x1fffffffffffffULL, 0xf.ffffffffffff8p+49L },
{ 0xfffffffffffffULL, 0xf.ffffffffffffp+48L },
{ 0x7ffffffffffffULL, 0xf.fffffffffffep+47L },
@@ -103,7 +114,6 @@ static const struct {
{ 0x3ULL, 0xcp-2L },
{ 0x1ULL, 0x8p-3L },
};
-#endif
ATF_TC(floatunditf);
ATF_TC_HEAD(floatunditf, tc)
@@ -114,9 +124,6 @@ ATF_TC_HEAD(floatunditf, tc)
ATF_TC_BODY(floatunditf, tc)
{
-#ifndef __HAVE_LONG_DOUBLE
- atf_tc_skip("Requires long double support");
-#else
size_t i;
for (i = 0; i < __arraycount(testcases); ++i)
@@ -125,7 +132,6 @@ ATF_TC_BODY(floatunditf, tc)
"#%zu: expected %.20Lf, got %.20Lf\n", i,
testcases[i].ld,
(long double)testcases[i].u64);
-#endif
}
ATF_TP_ADD_TCS(tp)
