--- /dev/null
+/* Test getpayloadl.
+ Copyright 2024 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <math.h>
+
+#include "signature.h"
+SIGNATURE_CHECK (getpayloadl, long double, (const long double *));
+
+#include "minus-zero.h"
+#include "infinity.h"
+#include "signed-snan.h"
+#include "macros.h"
+
+#if defined __powerpc__ && LDBL_MANT_DIG == 106
+ /* This is PowerPC "double double", a pair of two doubles. NaN is represented
+ as the corresponding 64-bit IEEE value in the first double; the second is
+ irrelevant and therefore does not contain a payload. */
+# define PAYLOAD_BITS (DBL_MANT_DIG - 2)
+#else
+# define PAYLOAD_BITS (LDBL_MANT_DIG - 2)
+#endif
+
+int
+main ()
+{
+ long double arg;
+ long double ret;
+
+ /* Test non-NaN arguments. */
+
+ arg = 2.71828182845904523536028747135266249776L;
+ ret = getpayloadl (&arg);
+ ASSERT (ret == -1.0L);
+
+ arg = -3.1415926535897932384626433832795028842L;
+ ret = getpayloadl (&arg);
+ ASSERT (ret == -1.0L);
+
+ arg = 0.0L;
+ ret = getpayloadl (&arg);
+ ASSERT (ret == -1.0L);
+
+ arg = minus_zerol;
+ ret = getpayloadl (&arg);
+ ASSERT (ret == -1.0L);
+
+ arg = Infinityl ();
+ ret = getpayloadl (&arg);
+ ASSERT (ret == -1.0L);
+
+ arg = - Infinityl ();
+ ret = getpayloadl (&arg);
+ ASSERT (ret == -1.0L);
+
+ /* Test quiet NaNs. */
+ {
+ int i;
+ long double p;
+
+ for (i = 0, p = 1.0L; i < PAYLOAD_BITS; i++, p *= 2.0L)
+ {
+ ASSERT (setpayloadl (&arg, p) == 0);
+ ret = getpayloadl (&arg);
+ ASSERT (ret == p);
+ /* Test quiet NaNs with sign bit == 1. */
+ arg = - arg;
+ ret = getpayloadl (&arg);
+ ASSERT (ret == p);
+ }
+
+ p = 1320699239819071.0L;
+ ASSERT (setpayloadl (&arg, p) == 0);
+ ret = getpayloadl (&arg);
+ ASSERT (ret == p);
+ }
+
+ /* Test signalling NaNs. */
+ {
+ int i;
+ long double p;
+
+ for (i = 0, p = 1.0L; i < PAYLOAD_BITS; i++, p *= 2.0L)
+ {
+ ASSERT (setpayloadsigl (&arg, p) == 0);
+ ret = getpayloadl (&arg);
+ ASSERT (ret == p);
+ }
+
+ p = 1320699239819071.0L;
+ ASSERT (setpayloadsigl (&arg, p) == 0);
+ ret = getpayloadl (&arg);
+ ASSERT (ret == p);
+
+ /* Test signalling NaNs with sign bit == 1. */
+ memory_long_double pos_arg = memory_positive_SNaNl ();
+ memory_long_double neg_arg = memory_negative_SNaNl ();
+ long double pos_ret = getpayloadl (&pos_arg.value);
+ long double neg_ret = getpayloadl (&neg_arg.value);
+ ASSERT (neg_ret == pos_ret);
+ }
+
+ return 0;
+}