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, 222 insertions, 0 deletions

diff --git a/REORG.TODO/math/basic-test.c b/REORG.TODO/math/basic-test.c
new file mode 100644
index 0000000000..43badbc6aa
--- /dev/null
+++ b/REORG.TODO/math/basic-test.c
@@ -0,0 +1,222 @@
+/* Copyright (C) 1999-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Jaeger <aj@suse.de>, 1999.
+
+   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 <math.h>
+#include <float.h>
+#include <stdio.h>
+
+#include <math-tests.h>
+
+
+static int errors = 0;
+
+
+static void
+check (const char *testname, int result)
+{
+  if (!result) {
+    printf ("Failure: %s\n", testname);
+    errors++;
+  }
+}
+
+#define TEST_FUNC(NAME, FLOAT, SUFFIX, EPSILON, HUGEVAL)		      \
+static void								      \
+NAME (void)								      \
+{									      \
+  /* Variables are declared volatile to forbid some compiler		      \
+     optimizations.  */							      \
+  volatile FLOAT Inf_var, qNaN_var, zero_var, one_var;			      \
+  /* A sNaN is only guaranteed to be representable in variables with */	      \
+  /* static (or thread-local) storage duration.  */			      \
+  static volatile FLOAT sNaN_var = __builtin_nans ## SUFFIX ("");	      \
+  static volatile FLOAT minus_sNaN_var = -__builtin_nans ## SUFFIX ("");      \
+  FLOAT x1, x2;								      \
+									      \
+  zero_var = 0.0;							      \
+  one_var = 1.0;							      \
+  qNaN_var = __builtin_nan ## SUFFIX ("");				      \
+  Inf_var = one_var / zero_var;						      \
+									      \
+  (void) &zero_var;							      \
+  (void) &one_var;							      \
+  (void) &qNaN_var;							      \
+  (void) &sNaN_var;							      \
+  (void) &minus_sNaN_var;						      \
+  (void) &Inf_var;							      \
+									      \
+									      \
+  check (#FLOAT " isinf (inf) == 1", isinf (Inf_var) == 1);		      \
+  check (#FLOAT " isinf (-inf) == -1", isinf (-Inf_var) == -1);		      \
+  check (#FLOAT " !isinf (1)", !(isinf (one_var)));			      \
+  check (#FLOAT " !isinf (qNaN)", !(isinf (qNaN_var)));			      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " !isinf (sNaN)", !(isinf (sNaN_var)));		      \
+									      \
+  check (#FLOAT " isnan (qNaN)", isnan (qNaN_var));			      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " isnan (sNaN)", isnan (sNaN_var));			      \
+  check (#FLOAT " isnan (-qNaN)", isnan (-qNaN_var));			      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " isnan (-sNaN)", isnan (minus_sNaN_var));		      \
+  check (#FLOAT " !isnan (1)", !(isnan (one_var)));			      \
+  check (#FLOAT " !isnan (inf)", !(isnan (Inf_var)));			      \
+									      \
+  check (#FLOAT " !issignaling (qNaN)", !(issignaling (qNaN_var)));	      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " issignaling (sNaN)", issignaling (sNaN_var));	      \
+  check (#FLOAT " !issignaling (-qNaN)", !(issignaling (-qNaN_var)));	      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " issignaling (-sNaN)", issignaling (minus_sNaN_var));      \
+  check (#FLOAT " !issignaling (1)", !(issignaling (one_var)));		      \
+  check (#FLOAT " !issignaling (inf)", !(issignaling (Inf_var)));	      \
+									      \
+  check (#FLOAT " inf == inf", Inf_var == Inf_var);			      \
+  check (#FLOAT " -inf == -inf", -Inf_var == -Inf_var);			      \
+  check (#FLOAT " inf != -inf", Inf_var != -Inf_var);			      \
+  check (#FLOAT " qNaN != qNaN", qNaN_var != qNaN_var);			      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " sNaN != sNaN", sNaN_var != sNaN_var);		      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " qNaN != sNaN", qNaN_var != sNaN_var);		      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " -sNaN != -sNaN", minus_sNaN_var != minus_sNaN_var);	      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " sNaN != -sNaN", sNaN_var != minus_sNaN_var);	      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " qNaN != -sNaN", qNaN_var != minus_sNaN_var);	      \
+									      \
+  /*									      \
+     the same tests but this time with NAN from <bits/nan.h>		      \
+     NAN is a double const						      \
+   */									      \
+  check (#FLOAT " isnan (NAN)", isnan (NAN));				      \
+  check (#FLOAT " isnan (-NAN)", isnan (-NAN));				      \
+  check (#FLOAT " !isinf (NAN)", !(isinf (NAN)));			      \
+  check (#FLOAT " !isinf (-NAN)", !(isinf (-NAN)));			      \
+  check (#FLOAT " NAN != NAN", NAN != NAN);				      \
+  check (#FLOAT " NAN != qNaN", NAN != qNaN_var);			      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " NAN != sNaN", NAN != sNaN_var);			      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " NAN != -sNaN", NAN != minus_sNaN_var);		      \
+									      \
+  /*									      \
+     And again with the value returned by the `nan' function.		      \
+   */									      \
+  check (#FLOAT " isnan (nan (\"\"))", isnan (nan ## SUFFIX ("")));	      \
+  check (#FLOAT " isnan (-nan (\"\"))", isnan (-nan ## SUFFIX ("")));	      \
+  check (#FLOAT " !isinf (nan (\"\"))", !(isinf (nan ## SUFFIX (""))));	      \
+  check (#FLOAT " !isinf (-nan (\"\"))", !(isinf (-nan ## SUFFIX (""))));     \
+  check (#FLOAT " nan (\"\") != nan (\"\")",				      \
+	 nan ## SUFFIX ("") != nan ## SUFFIX (""));			      \
+  check (#FLOAT " nan (\"\") != qNaN", nan ## SUFFIX ("") != qNaN_var);	      \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " nan (\"\") != sNaN", nan ## SUFFIX ("") != sNaN_var);     \
+  if (SNAN_TESTS (FLOAT))						      \
+    check (#FLOAT " nan (\"\") != -sNaN",				      \
+	   nan ## SUFFIX ("") != minus_sNaN_var);			      \
+									      \
+  /* test if EPSILON is ok */						      \
+  x1 = 1.0;								      \
+  x2 = x1 + EPSILON;							      \
+  check (#FLOAT " 1 != 1+EPSILON", x1 != x2);				      \
+									      \
+  x1 = 1.0;								      \
+  x2 = x1 - EPSILON;							      \
+  check (#FLOAT " 1 != 1-EPSILON", x1 != x2);				      \
+									      \
+  /* test if HUGE_VALx is ok */						      \
+  x1 = HUGEVAL;								      \
+  check (#FLOAT " isinf (HUGE_VALx) == +1", isinf (x1) == +1);		      \
+  x1 = - HUGEVAL;							      \
+  check (#FLOAT " isinf (-HUGE_VALx) == -1", isinf (x1) == -1);		      \
+}
+
+#define TEST_CONVERT(NAME, FLOAT, DOUBLE, SUFFIX)			      \
+void									      \
+NAME (void)								      \
+{									      \
+  volatile DOUBLE Inf_var, qNaN_var, zero_var, one_var;			      \
+  /* A sNaN is only guaranteed to be representable in variables with */	      \
+  /* static (or thread-local) storage duration.  */			      \
+  static volatile DOUBLE sNaN_var = __builtin_nans ## SUFFIX ("");	      \
+  FLOAT x1, x2;								      \
+									      \
+  zero_var = 0.0;							      \
+  one_var = 1.0;							      \
+  qNaN_var = __builtin_nan ## SUFFIX ("");				      \
+  Inf_var = one_var / zero_var;						      \
+									      \
+  (void) &qNaN_var;							      \
+  (void) &sNaN_var;							      \
+  (void) &Inf_var;							      \
+									      \
+  x1 = (FLOAT) qNaN_var;						      \
+  check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") qNaN, isnan", isnan (x1));     \
+  check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") qNaN, !issignaling",	      \
+	 !issignaling (x1));						      \
+  if (SNAN_TESTS (FLOAT))						      \
+    {									      \
+      x1 = (FLOAT) sNaN_var;						      \
+      check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") sNaN, isnan", isnan (x1)); \
+      if (SNAN_TESTS_TYPE_CAST)						      \
+	{								      \
+	  /* Upon type conversion, a sNaN is converted into a qNaN plus an */ \
+	  /* INVALID exception (not checked here).  */			      \
+	  check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") sNaN, !issignaling",   \
+		 !issignaling (x1));					      \
+	}								      \
+      }									      \
+  x2 = (FLOAT) Inf_var;							      \
+  check (" "#FLOAT" x = ("#FLOAT") ("#DOUBLE") Inf", isinf (x2) != 0);	      \
+}
+
+TEST_FUNC (float_test, float, f, FLT_EPSILON, HUGE_VALF)
+TEST_FUNC (double_test, double, , DBL_EPSILON, HUGE_VAL)
+TEST_CONVERT (convert_dfsf_test, float, double, )
+TEST_CONVERT (convert_sfdf_test, double, float, f)
+#ifndef NO_LONG_DOUBLE
+TEST_FUNC (ldouble_test, long double, l, LDBL_EPSILON, HUGE_VALL)
+TEST_CONVERT (convert_tfsf_test, float, long double, l)
+TEST_CONVERT (convert_sftf_test, long double, float, f)
+TEST_CONVERT (convert_tfdf_test, double, long double, l)
+TEST_CONVERT (convert_dftf_test, long double, double, )
+#endif
+
+int
+do_test (void)
+{
+  float_test ();
+  double_test ();
+  convert_dfsf_test();
+  convert_sfdf_test();
+
+#ifndef NO_LONG_DOUBLE
+  ldouble_test ();
+  convert_tfsf_test();
+  convert_sftf_test();
+  convert_tfdf_test();
+  convert_dftf_test();
+#endif
+
+  return errors != 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"