Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 0 insertions, 225 deletions

diff --git a/stdlib/tst-strtod-underflow.c b/stdlib/tst-strtod-underflow.c
deleted file mode 100644
index f623a6be90..0000000000
--- a/stdlib/tst-strtod-underflow.c
+++ /dev/null
@@ -1,225 +0,0 @@
-/* Test for strtod handling of arguments that may cause floating-point
-   underflow.
-   Copyright (C) 2012-2017 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library 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
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <fenv.h>
-#include <float.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <tininess.h>
-
-enum underflow_case
-  {
-    /* Result is exact or outside the subnormal range.  */
-    UNDERFLOW_NONE,
-    /* Result has magnitude at most half way between the largest
-       subnormal value and the smallest positive normal value, and is
-       not exact, so underflows in all rounding modes and independent
-       of how tininess is detected.  */
-    UNDERFLOW_ALWAYS,
-    /* Result is positive, with magnitude larger than half way between
-       the largest subnormal value and the least positive normal
-       value, but would underflow when rounded to nearest to normal
-       precision, so underflows after rounding in all modes except
-       rounding upward.  */
-    UNDERFLOW_EXCEPT_UPWARD,
-    /* Likewise, for a negative result, underflowing after rounding
-       except when rounding downward.  */
-    UNDERFLOW_EXCEPT_DOWNWARD,
-    /* Result is positive, with magnitude at least three quarters of
-       the way from the largest subnormal value to the smallest
-       positive normal value, so underflows after rounding only when
-       rounding downward or toward zero.  */
-    UNDERFLOW_ONLY_DOWNWARD_ZERO,
-    /* Likewise, for a negative result, underflowing after rounding
-       only when rounding upward or toward zero.  */
-    UNDERFLOW_ONLY_UPWARD_ZERO,
-  };
-
-struct test
-{
-  const char *s;
-  enum underflow_case c;
-};
-
-static const struct test tests[] =
-  {
-    { "0x1p-1022", UNDERFLOW_NONE },
-    { "-0x1p-1022", UNDERFLOW_NONE },
-    { "0x0p-10000000000000000000000000", UNDERFLOW_NONE },
-    { "-0x0p-10000000000000000000000000", UNDERFLOW_NONE },
-    { "0x1p-10000000000000000000000000", UNDERFLOW_ALWAYS },
-    { "-0x1p-10000000000000000000000000", UNDERFLOW_ALWAYS },
-    { "0x1.000000000000000000001p-1022", UNDERFLOW_NONE },
-    { "-0x1.000000000000000000001p-1022", UNDERFLOW_NONE },
-    { "0x1p-1075", UNDERFLOW_ALWAYS },
-    { "-0x1p-1075", UNDERFLOW_ALWAYS },
-    { "0x1p-1023", UNDERFLOW_NONE },
-    { "-0x1p-1023", UNDERFLOW_NONE },
-    { "0x1p-1074", UNDERFLOW_NONE },
-    { "-0x1p-1074", UNDERFLOW_NONE },
-    { "0x1.ffffffffffffep-1023", UNDERFLOW_NONE },
-    { "-0x1.ffffffffffffep-1023", UNDERFLOW_NONE },
-    { "0x1.fffffffffffffp-1023", UNDERFLOW_ALWAYS },
-    { "-0x1.fffffffffffffp-1023", UNDERFLOW_ALWAYS },
-    { "0x1.fffffffffffff0001p-1023", UNDERFLOW_EXCEPT_UPWARD },
-    { "-0x1.fffffffffffff0001p-1023", UNDERFLOW_EXCEPT_DOWNWARD },
-    { "0x1.fffffffffffff7fffp-1023", UNDERFLOW_EXCEPT_UPWARD },
-    { "-0x1.fffffffffffff7fffp-1023", UNDERFLOW_EXCEPT_DOWNWARD },
-    { "0x1.fffffffffffff8p-1023", UNDERFLOW_ONLY_DOWNWARD_ZERO },
-    { "-0x1.fffffffffffff8p-1023", UNDERFLOW_ONLY_UPWARD_ZERO },
-    { "0x1.fffffffffffffffffp-1023", UNDERFLOW_ONLY_DOWNWARD_ZERO },
-    { "-0x1.fffffffffffffffffp-1023", UNDERFLOW_ONLY_UPWARD_ZERO },
-  };
-
-/* Return whether to expect underflow from a particular testcase, in a
-   given rounding mode.  */
-
-static bool
-expect_underflow (enum underflow_case c, int rm)
-{
-  if (c == UNDERFLOW_NONE)
-    return false;
-  if (c == UNDERFLOW_ALWAYS)
-    return true;
-  if (TININESS_AFTER_ROUNDING)
-    {
-      switch (rm)
-	{
-#ifdef FE_DOWNWARD
-	case FE_DOWNWARD:
-	  return (c == UNDERFLOW_EXCEPT_UPWARD
-		  || c == UNDERFLOW_ONLY_DOWNWARD_ZERO);
-#endif
-
-#ifdef FE_TOWARDZERO
-	case FE_TOWARDZERO:
-	  return true;
-#endif
-
-#ifdef FE_UPWARD
-	case FE_UPWARD:
-	  return (c == UNDERFLOW_EXCEPT_DOWNWARD
-		  || c == UNDERFLOW_ONLY_UPWARD_ZERO);
-#endif
-
-	default:
-	  return (c == UNDERFLOW_EXCEPT_UPWARD
-		  || c == UNDERFLOW_EXCEPT_DOWNWARD);
-	}
-    }
-  else
-    return true;
-}
-
-static bool support_underflow_exception = false;
-volatile double d = DBL_MIN;
-volatile double dd;
-
-static int
-test_in_one_mode (const char *s, enum underflow_case c, int rm,
-		  const char *mode_name)
-{
-  int result = 0;
-  feclearexcept (FE_ALL_EXCEPT);
-  errno = 0;
-  double d = strtod (s, NULL);
-  int got_errno = errno;
-#ifdef FE_UNDERFLOW
-  bool got_fe_underflow = fetestexcept (FE_UNDERFLOW) != 0;
-#else
-  bool got_fe_underflow = false;
-#endif
-  printf ("strtod (%s) (%s) returned %a, errno = %d, %sunderflow exception\n",
-	  s, mode_name, d, got_errno, got_fe_underflow ? "" : "no ");
-  bool this_expect_underflow = expect_underflow (c, rm);
-  if (got_errno != 0 && got_errno != ERANGE)
-    {
-      puts ("FAIL: errno neither 0 nor ERANGE");
-      result = 1;
-    }
-  else if (this_expect_underflow != (errno == ERANGE))
-    {
-      puts ("FAIL: underflow from errno differs from expectations");
-      result = 1;
-    }
-  if (support_underflow_exception && got_fe_underflow != this_expect_underflow)
-    {
-      puts ("FAIL: underflow from exceptions differs from expectations");
-      result = 1;
-    }
-  return result;
-}
-
-static int
-do_test (void)
-{
-  int save_round_mode __attribute__ ((unused)) = fegetround ();
-  int result = 0;
-#ifdef FE_TONEAREST
-  const int fe_tonearest = FE_TONEAREST;
-#else
-  const int fe_tonearest = 0;
-# if defined FE_DOWNWARD || defined FE_TOWARDZERO || defined FE_UPWARD
-#  error "FE_TONEAREST not defined, but another rounding mode is"
-# endif
-#endif
-#ifdef FE_UNDERFLOW
-  feclearexcept (FE_ALL_EXCEPT);
-  dd = d * d;
-  if (fetestexcept (FE_UNDERFLOW))
-    support_underflow_exception = true;
-  else
-    puts ("underflow exception not supported at runtime, only testing errno");
-#endif
-  for (size_t i = 0; i < sizeof (tests) / sizeof (tests[0]); i++)
-    {
-      result |= test_in_one_mode (tests[i].s, tests[i].c, fe_tonearest,
-				  "default rounding mode");
-#ifdef FE_DOWNWARD
-      if (!fesetround (FE_DOWNWARD))
-	{
-	  result |= test_in_one_mode (tests[i].s, tests[i].c, FE_DOWNWARD,
-				      "FE_DOWNWARD");
-	  fesetround (save_round_mode);
-	}
-#endif
-#ifdef FE_TOWARDZERO
-      if (!fesetround (FE_TOWARDZERO))
-	{
-	  result |= test_in_one_mode (tests[i].s, tests[i].c, FE_TOWARDZERO,
-				      "FE_TOWARDZERO");
-	  fesetround (save_round_mode);
-	}
-#endif
-#ifdef FE_UPWARD
-      if (!fesetround (FE_UPWARD))
-	{
-	  result |= test_in_one_mode (tests[i].s, tests[i].c, FE_UPWARD,
-				      "FE_UPWARD");
-	  fesetround (save_round_mode);
-	}
-#endif
-    }
-  return result;
-}
-
-#define TEST_FUNCTION do_test ()
-#include "../test-skeleton.c"