Refactor libm-test inline tests disabling.

This patch refactors how libm-test.inc handles disabling
errno/exception handling tests, and some other tests, for
__FAST_MATH__ inline function tests.

The macro TEST_INLINE is changed from being defined/undefined to being
defined to 1 or 0, so that it can be tested in "if" conditionals
instead of #if.  For tests of errno and exception setting, separate
macros TEST_ERRNO and TEST_EXCEPTIONS are added, and TEST_ERRNO is
also used in the disabling of errno testing for vector function
tests.  The relevant conditionals are moved up a function, so that
they take effect before the code that counts the number of tests, so
the inline function tests now accurately report that 0 tests for
exceptions and errno were executed (whereas they previously reported a
large number desipte not running any such tests).

Tested for x86_64 and x86.

	* math/test-math-errno.h: New file.
	* math/test-math-inline.h (TEST_INLINE): Define to 1 instead of
	empty.
	(TEST_ERRNO): New macro.
	(TEST_EXCEPTIONS): Likewise.
	* math/test-math-no-inline.h (TEST_INLINE): Likewise.
	(TEST_EXCEPTIONS): Likewise.
	* math/test-math-vector.h (TEST_ERRNO): Likewise.
	* math/test-double.c: Include "test-math-errno.h".
	* math/test-float.c: Likewise.
	* math/test-ldouble.c: Likewise.
	* math/libm-test.inc (test_single_exception) [!TEST_INLINE]: Make
	code unconditional.
	(test_exceptions): Only run code if TEST_EXCEPTIONS.
	(test_single_errno) [!TEST_INLINE && !TEST_MATHVEC]: Make code
	unconditional.
	(test_errno): Only run code if TEST_ERRNO.
	(enable_test): Use "if" conditional on TEST_INLINE, not #ifdef.

ChangeLog

@@ -1,3 +1,24 @@
+2015-11-04  Joseph Myers  <joseph@codesourcery.com>
+
+	* math/test-math-errno.h: New file.
+	* math/test-math-inline.h (TEST_INLINE): Define to 1 instead of
+	empty.
+	(TEST_ERRNO): New macro.
+	(TEST_EXCEPTIONS): Likewise.
+	* math/test-math-no-inline.h (TEST_INLINE): Likewise.
+	(TEST_EXCEPTIONS): Likewise.
+	* math/test-math-vector.h (TEST_ERRNO): Likewise.
+	* math/test-double.c: Include "test-math-errno.h".
+	* math/test-float.c: Likewise.
+	* math/test-ldouble.c: Likewise.
+	* math/libm-test.inc (test_single_exception) [!TEST_INLINE]: Make
+	code unconditional.
+	(test_exceptions): Only run code if TEST_EXCEPTIONS.
+	(test_single_errno) [!TEST_INLINE && !TEST_MATHVEC]: Make code
+	unconditional.
+	(test_errno): Only run code if TEST_ERRNO.
+	(enable_test): Use "if" conditional on TEST_INLINE, not #ifdef.
+
 2015-11-04  Florian Weimer  <fweimer@redhat.com>
 
 	* nptl/tst-once5.cc: Remove attribution.

math/libm-test.inc

@@ -608,7 +608,6 @@ test_single_exception (const char *test_name,
 		       int fe_flag,
 		       const char *flag_name)
 {
-# ifndef TEST_INLINE
   int ok = 1;
   if (exception & exc_flag)
     {
@@ -643,8 +642,6 @@ test_single_exception (const char *test_name,
     }
   if (!ok)
     ++noErrors;
-
-# endif
 }
 #endif
 
@@ -654,7 +651,7 @@ test_single_exception (const char *test_name,
 static void
 test_exceptions (const char *test_name, int exception)
 {
-  if (EXCEPTION_TESTS (FLOAT))
+  if (TEST_EXCEPTIONS && EXCEPTION_TESTS (FLOAT))
     {
       ++noExcTests;
 #ifdef FE_DIVBYZERO
@@ -694,7 +691,6 @@ static void
 test_single_errno (const char *test_name, int errno_value,
 		   int expected_value, const char *expected_name)
 {
-#if !defined TEST_INLINE && !TEST_MATHVEC
   if (errno_value == expected_value)
     {
       if (print_screen (1))
@@ -708,7 +704,6 @@ test_single_errno (const char *test_name, int errno_value,
 	printf ("Failure: %s: errno set to %d, expected %d (%s)\n",
 		test_name, errno_value, expected_value, expected_name);
     }
-#endif
 }
 
 /* Test whether errno (value ERRNO_VALUE) has been for TEST_NAME set
@@ -716,13 +711,16 @@ test_single_errno (const char *test_name, int errno_value,
 static void
 test_errno (const char *test_name, int errno_value, int exceptions)
 {
-  ++noErrnoTests;
+  if (TEST_ERRNO)
-  if (exceptions & ERRNO_UNCHANGED)
+    {
-    test_single_errno (test_name, errno_value, 0, "unchanged");
+      ++noErrnoTests;
-  if (exceptions & ERRNO_EDOM)
+      if (exceptions & ERRNO_UNCHANGED)
-    test_single_errno (test_name, errno_value, EDOM, "EDOM");
+	test_single_errno (test_name, errno_value, 0, "unchanged");
-  if (exceptions & ERRNO_ERANGE)
+      if (exceptions & ERRNO_EDOM)
-    test_single_errno (test_name, errno_value, ERANGE, "ERANGE");
+	test_single_errno (test_name, errno_value, EDOM, "EDOM");
+      if (exceptions & ERRNO_ERANGE)
+	test_single_errno (test_name, errno_value, ERANGE, "ERANGE");
+    }
 }
 
 /* Returns the number of ulps that GIVEN is away from EXPECTED.  */
@@ -1041,10 +1039,8 @@ enable_test (int exceptions)
 {
   if (exceptions & XFAIL_TEST)
     return 0;
-#ifdef TEST_INLINE
+  if (TEST_INLINE && (exceptions & NO_TEST_INLINE))
-  if (exceptions & NO_TEST_INLINE)
     return 0;
-#endif
   return 1;
 }
 

math/test-double.c

@@ -18,6 +18,7 @@
 
 #include "test-double.h"
 #include "test-math-no-inline.h"
+#include "test-math-errno.h"
 #include "test-math-scalar.h"
 
 #define TEST_MSG "testing double (without inline functions)\n"

math/test-float.c

@@ -18,6 +18,7 @@
 
 #include "test-float.h"
 #include "test-math-no-inline.h"
+#include "test-math-errno.h"
 #include "test-math-scalar.h"
 
 #define TEST_MSG "testing float (without inline functions)\n"

math/test-ldouble.c

@@ -18,6 +18,7 @@
 
 #include "test-ldouble.h"
 #include "test-math-no-inline.h"
+#include "test-math-errno.h"
 #include "test-math-scalar.h"
 
 #define TEST_MSG "testing long double (without inline functions)\n"

math/test-math-errno.h

@@ -0,0 +1,19 @@
+/* Common definitions for libm tests for functions setting errno.
+   Copyright (C) 2015 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/>.  */
+
+#define TEST_ERRNO 1

math/test-math-inline.h

@@ -16,7 +16,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
-#define TEST_INLINE
+#define TEST_INLINE 1
+#define TEST_ERRNO 0
+#define TEST_EXCEPTIONS 0
 
 #ifdef __NO_MATH_INLINES
 # undef __NO_MATH_INLINES

math/test-math-no-inline.h

@@ -16,6 +16,9 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#define TEST_INLINE 0
+#define TEST_EXCEPTIONS 1
+
 #ifndef __NO_MATH_INLINES
 # define __NO_MATH_INLINES
 #endif

math/test-math-vector.h

@@ -17,6 +17,7 @@
    <http://www.gnu.org/licenses/>.  */
 
 #define TEST_MATHVEC 1
+#define TEST_ERRNO 0
 
 #define CNCT(x, y) x ## y
 #define CONCAT(a, b) CNCT (a, b)