--- /dev/null
+/* Test of xstrtod() in the "C" locale.
+ Copyright (C) 2008-2024 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 "xstrtod.h"
+
+#include <errno.h>
+#include <float.h>
+#include <math.h>
+#include <string.h>
+
+#include "isnand-nolibm.h"
+#include "minus-zero.h"
+#include "macros.h"
+
+#define UNINIT 0.2614972128476428
+
+int
+main ()
+{
+ /* Subject sequence empty or invalid. */
+ {
+ const char input[] = "";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+ {
+ const char input[] = " ";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+ {
+ const char input[] = " +";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+ {
+ const char input[] = " .";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+ {
+ const char input[] = " .e0";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+ {
+ const char input[] = " +.e-0";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+ {
+ const char input[] = " in";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+ {
+ const char input[] = " na";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (errno == 0 || errno == EINVAL);
+ }
+ }
+
+ /* Simple floating point values. */
+ {
+ const char input[] = "1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1.";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = ".5";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.5);
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = " 1";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (errno == 0);
+ }
+ }
+ {
+ const char input[] = "+1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "-1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == -1.0);
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1e0";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1e+0";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 4);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1e-0";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 4);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1e1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 10.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "5e-1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.5);
+ ASSERT (ptr == input + 4);
+ ASSERT (errno == 0);
+ }
+
+ /* Zero. */
+ {
+ const char input[] = "0";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = ".0";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0e0";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0e+9999999";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 10);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0e-9999999";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 10);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "-0";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!!signbit (result) == !!signbit (minus_zerod));
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+
+ /* Suffixes. */
+ {
+ const char input[] = "1f";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1.f";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1e";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 1.0);
+ ASSERT (errno == 0);
+ }
+ }
+ {
+ const char input[] = "1e+";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 1.0);
+ ASSERT (errno == 0);
+ }
+ }
+ {
+ const char input[] = "1e-";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 1.0);
+ ASSERT (errno == 0);
+ }
+ }
+ {
+ const char input[] = "1E 2";
+ {
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ double result = UNINIT;
+ bool ok = xstrtod (input, NULL, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == 1.0);
+ ASSERT (errno == 0);
+ }
+ }
+ {
+ const char input[] = "0x";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "00x1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "-0x";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!!signbit (result) == !!signbit (minus_zerod));
+ ASSERT (ptr == input + 2);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0xg";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0xp";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0XP";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x.";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0xp+";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0xp+1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x.p+1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1p+1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "1P+1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+
+ /* Overflow. */
+ {
+ const char input[] = "1e500";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == HUGE_VAL);
+ ASSERT (ptr == input + 5);
+ ASSERT (errno == ERANGE);
+ }
+ {
+ const char input[] = "1E1000000";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == HUGE_VAL);
+ ASSERT (ptr == input + 9);
+ ASSERT (errno == ERANGE);
+ }
+ {
+ const char input[] = "-1E1000000";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (!ok);
+ ASSERT (result == -HUGE_VAL);
+ ASSERT (ptr == input + 10);
+ ASSERT (errno == ERANGE);
+ }
+
+ /* Gradual underflow, resulting in a denormalized number. */
+ {
+ const char input[] = "1e-320";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+#if defined _MSC_VER
+ ASSERT (ok);
+#else
+ ASSERT (!ok);
+#endif
+ ASSERT (0.0 < result && result <= DBL_MIN);
+ ASSERT (ptr == input + 6);
+#if defined _MSC_VER
+ ASSERT (errno == 0);
+#else
+ ASSERT (errno == ERANGE);
+#endif
+ }
+ {
+ const char input[] = "-1e-320";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+#if defined _MSC_VER
+ ASSERT (ok);
+#else
+ ASSERT (!ok);
+#endif
+ ASSERT (-DBL_MIN <= result && result < 0.0);
+ ASSERT (ptr == input + 7);
+#if defined _MSC_VER
+ ASSERT (errno == 0);
+#else
+ ASSERT (errno == ERANGE);
+#endif
+ }
+
+ /* Flush-to-zero underflow. */
+ {
+ const char input[] = "1E-100000";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input + 9);
+ ASSERT (errno == ERANGE);
+ }
+ {
+ const char input[] = "-1E-100000";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ /* Negative underflow. Expect a negative sign, although POSIX allows +0.0.
+ See also <https://sourceware.org/bugzilla/show_bug.cgi?id=5995>. */
+ ASSERT (!!signbit (result) == !!signbit (minus_zerod));
+ ASSERT (ptr == input + 10);
+ ASSERT (errno == ERANGE);
+ }
+
+ /* Space before the exponent. */
+ {
+ const char input[] = "1E 1000000";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 1);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x1P 1000000";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+
+ /* Infinity. */
+ {
+ const char input[] = "iNf";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == HUGE_VAL);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "-InF";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == -HUGE_VAL);
+ ASSERT (ptr == input + 4);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "infinite";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == HUGE_VAL);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "infinitY";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == HUGE_VAL);
+ ASSERT (ptr == input + 8);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "infinitY.";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == HUGE_VAL);
+ ASSERT (ptr == input + 8);
+ ASSERT (errno == 0);
+ }
+
+ /* NaN. Some processors set the sign bit of the default NaN, so all
+ we check is that using a sign changes the result. */
+ {
+ const char input[] = "-nan";
+ const char *ptr1;
+ const char *ptr2;
+ double result1 = UNINIT;
+ double result2 = UNINIT;
+ bool ok1 = xstrtod (input, &ptr1, &result1, strtod);
+ bool ok2 = xstrtod (input + 1, &ptr2, &result2, strtod);
+ ASSERT (ok1);
+ ASSERT (ok2);
+#if 1 /* All known CPUs support NaNs. */
+ ASSERT (isnand (result1));
+ ASSERT (isnand (result2));
+# if 0
+ /* Sign bits of NaN is a portability sticking point, not worth
+ worrying about. */
+ ASSERT (!!signbit (result1) != !!signbit (result2));
+# endif
+ ASSERT (ptr1 == input + 4);
+ ASSERT (ptr2 == input + 4);
+ ASSERT (errno == 0);
+#else
+ ASSERT (result1 == 0.0);
+ ASSERT (result2 == 0.0);
+ ASSERT (!signbit (result1));
+ ASSERT (!signbit (result2));
+ ASSERT (ptr1 == input);
+ ASSERT (ptr2 == input + 1);
+ ASSERT (errno == 0 || errno == EINVAL);
+#endif
+ }
+ {
+ const char input[] = "+nan(";
+ const char *ptr1;
+ const char *ptr2;
+ double result1 = UNINIT;
+ double result2 = UNINIT;
+ bool ok1 = xstrtod (input, &ptr1, &result1, strtod);
+ bool ok2 = xstrtod (input + 1, &ptr2, &result2, strtod);
+ ASSERT (ok1);
+ ASSERT (ok2);
+#if 1 /* All known CPUs support NaNs. */
+ ASSERT (isnand (result1));
+ ASSERT (isnand (result2));
+ ASSERT (!!signbit (result1) == !!signbit (result2));
+ ASSERT (ptr1 == input + 4);
+ ASSERT (ptr2 == input + 4);
+ ASSERT (errno == 0);
+#else
+ ASSERT (result1 == 0.0);
+ ASSERT (result2 == 0.0);
+ ASSERT (!signbit (result1));
+ ASSERT (!signbit (result2));
+ ASSERT (ptr1 == input);
+ ASSERT (ptr2 == input + 1);
+ ASSERT (errno == 0 || errno == EINVAL);
+#endif
+ }
+ {
+ const char input[] = "-nan()";
+ const char *ptr1;
+ const char *ptr2;
+ double result1 = UNINIT;
+ double result2 = UNINIT;
+ bool ok1 = xstrtod (input, &ptr1, &result1, strtod);
+ bool ok2 = xstrtod (input + 1, &ptr2, &result2, strtod);
+ ASSERT (ok1);
+ ASSERT (ok2);
+#if 1 /* All known CPUs support NaNs. */
+ ASSERT (isnand (result1));
+ ASSERT (isnand (result2));
+# if 0
+ /* Sign bits of NaN is a portability sticking point, not worth
+ worrying about. */
+ ASSERT (!!signbit (result1) != !!signbit (result2));
+# endif
+ ASSERT (ptr1 == input + 6);
+ ASSERT (ptr2 == input + 6);
+ ASSERT (errno == 0);
+#else
+ ASSERT (result1 == 0.0);
+ ASSERT (result2 == 0.0);
+ ASSERT (!signbit (result1));
+ ASSERT (!signbit (result2));
+ ASSERT (ptr1 == input);
+ ASSERT (ptr2 == input + 1);
+ ASSERT (errno == 0 || errno == EINVAL);
+#endif
+ }
+ {
+ const char input[] = " nan().";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+#if 1 /* All known CPUs support NaNs. */
+ ASSERT (isnand (result));
+ ASSERT (ptr == input + 6);
+ ASSERT (errno == 0);
+#else
+ ASSERT (result == 0.0);
+ ASSERT (!signbit (result));
+ ASSERT (ptr == input);
+ ASSERT (errno == 0 || errno == EINVAL);
+#endif
+ }
+ {
+ /* The behavior of nan(0) is implementation-defined, but all
+ implementations we know of which handle optional
+ n-char-sequences handle nan(0) the same as nan(). */
+ const char input[] = "-nan(0).";
+ const char *ptr1;
+ const char *ptr2;
+ double result1 = UNINIT;
+ double result2 = UNINIT;
+ bool ok1 = xstrtod (input, &ptr1, &result1, strtod);
+ bool ok2 = xstrtod (input + 1, &ptr2, &result2, strtod);
+ ASSERT (ok1);
+ ASSERT (ok2);
+#if 1 /* All known CPUs support NaNs. */
+ ASSERT (isnand (result1));
+ ASSERT (isnand (result2));
+# if 0
+ /* Sign bits of NaN is a portability sticking point, not worth
+ worrying about. */
+ ASSERT (!!signbit (result1) != !!signbit (result2));
+# endif
+ ASSERT (ptr1 == input + 7);
+ ASSERT (ptr2 == input + 7);
+ ASSERT (errno == 0);
+#else
+ ASSERT (result1 == 0.0);
+ ASSERT (result2 == 0.0);
+ ASSERT (!signbit (result1));
+ ASSERT (!signbit (result2));
+ ASSERT (ptr1 == input);
+ ASSERT (ptr2 == input + 1);
+ ASSERT (errno == 0 || errno == EINVAL);
+#endif
+ }
+
+ /* Hex. */
+ {
+ const char input[] = "0xa";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 10.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0XA";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 10.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x1p";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x1p+";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x1P+";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x1p+1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 2.0);
+ ASSERT (ptr == input + 6);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0X1P+1";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 2.0);
+ ASSERT (ptr == input + 6);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x1p+1a";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 2.0);
+ ASSERT (ptr == input + 6);
+ ASSERT (errno == 0);
+ }
+ {
+ const char input[] = "0x1p 2";
+ const char *ptr;
+ double result = UNINIT;
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + 3);
+ ASSERT (errno == 0);
+ }
+
+ /* Large buffers. */
+ {
+ size_t m = 1000000;
+ char *input = malloc (m + 1);
+ if (input)
+ {
+ const char *ptr;
+ double result = UNINIT;
+ memset (input, '\t', m - 1);
+ input[m - 1] = '1';
+ input[m] = '\0';
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + m);
+ ASSERT (errno == 0);
+ }
+ free (input);
+ }
+ {
+ size_t m = 1000000;
+ char *input = malloc (m + 1);
+ if (input)
+ {
+ const char *ptr;
+ double result = UNINIT;
+ memset (input, '0', m - 1);
+ input[m - 1] = '1';
+ input[m] = '\0';
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + m);
+ ASSERT (errno == 0);
+ }
+ free (input);
+ }
+#if 0
+ /* Newlib has an artificial limit of 20000 for the exponent. TODO -
+ gnulib should fix this. */
+ {
+ size_t m = 1000000;
+ char *input = malloc (m + 1);
+ if (input)
+ {
+ const char *ptr;
+ double result = UNINIT;
+ input[0] = '.';
+ memset (input + 1, '0', m - 10);
+ input[m - 9] = '1';
+ input[m - 8] = 'e';
+ input[m - 7] = '+';
+ input[m - 6] = '9';
+ input[m - 5] = '9';
+ input[m - 4] = '9';
+ input[m - 3] = '9';
+ input[m - 2] = '9';
+ input[m - 1] = '1';
+ input[m] = '\0';
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + m);
+ ASSERT (errno == 0);
+ }
+ free (input);
+ }
+ {
+ size_t m = 1000000;
+ char *input = malloc (m + 1);
+ if (input)
+ {
+ const char *ptr;
+ double result = UNINIT;
+ input[0] = '1';
+ memset (input + 1, '0', m - 9);
+ input[m - 8] = 'e';
+ input[m - 7] = '-';
+ input[m - 6] = '9';
+ input[m - 5] = '9';
+ input[m - 4] = '9';
+ input[m - 3] = '9';
+ input[m - 2] = '9';
+ input[m - 1] = '1';
+ input[m] = '\0';
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 1.0);
+ ASSERT (ptr == input + m);
+ ASSERT (errno == 0);
+ }
+ free (input);
+ }
+#endif
+ {
+ size_t m = 1000000;
+ char *input = malloc (m + 1);
+ if (input)
+ {
+ const char *ptr;
+ double result = UNINIT;
+ input[0] = '-';
+ input[1] = '0';
+ input[2] = 'e';
+ input[3] = '1';
+ memset (input + 4, '0', m - 3);
+ input[m] = '\0';
+ bool ok = xstrtod (input, &ptr, &result, strtod);
+ ASSERT (ok);
+ ASSERT (result == 0.0);
+ ASSERT (!!signbit (result) == !!signbit (minus_zerod));
+ ASSERT (ptr == input + m);
+ ASSERT (errno == 0);
+ }
+ free (input);
+ }
+
+ return test_exit_status;
+}