Make ilogb wrappers type-generic.

This patch converts the ilogb wrappers (which set errno directly
rather than doing anything with __kernel_standard) to use the
type-generic template machinery.  This is intended as preparation for
adding llogb.

Tested for x86_64 and x86, and tested compile for other architectures
with build-many-glibcs.py.

	* math/w_ilogb_template.c: New file.  Based on math/w_ilogb.c.
	* math/w_ilogb.c: Remove.
	* math/w_ilogbf.c: Likewise.
	* math/w_ilogbl.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_ilogb.c: Likewise.
	* sysdeps/ieee754/ldbl-opt/w_ilogbl.c: Likewise.
	* math/Makefile (gen-libm-calls): Add w_ilogbF.
	(libm-calls): Remove w_ilogbF.
	* sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
	(LDOUBLE_ilogbl_libm_version): New macro.

8 files changed, 21 insertions, 96 deletions

diff --git a/ChangeLog b/ChangeLog
index 591b4c0cac..6b64145050 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,16 @@
 2016-11-28  Joseph Myers  <joseph@codesourcery.com>
 
+	* math/w_ilogb_template.c: New file.  Based on math/w_ilogb.c.
+	* math/w_ilogb.c: Remove.
+	* math/w_ilogbf.c: Likewise.
+	* math/w_ilogbl.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_ilogb.c: Likewise.
+	* sysdeps/ieee754/ldbl-opt/w_ilogbl.c: Likewise.
+	* math/Makefile (gen-libm-calls): Add w_ilogbF.
+	(libm-calls): Remove w_ilogbF.
+	* sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
+	(LDOUBLE_ilogbl_libm_version): New macro.
+
 	* sysdeps/unix/sysv/linux/ia64/tst-setcontext2.c: New file.
 
 	* sysdeps/ia64/fpu/libm-symbols.h: Make contents conditional on
diff --git a/math/Makefile b/math/Makefile
index 7196e5e5a8..bcf627d173 100644
--- a/math/Makefile
+++ b/math/Makefile
@@ -52,7 +52,7 @@ gen-libm-calls = cargF conjF cimagF crealF cabsF s_cacosF		  \
 		 k_casinhF s_csinhF k_casinhF s_csinhF s_catanhF s_catanF \
 		 s_ctanF s_ctanhF s_cexpF s_clogF s_cprojF s_csqrtF	  \
 		 s_cpowF s_clog10F s_fdimF s_nextdownF s_fmaxF s_fminF	  \
-		 s_nanF s_iseqsigF s_canonicalizeF
+		 s_nanF s_iseqsigF s_canonicalizeF w_ilogbF
 
 libm-calls =								  \
 	e_acosF e_acoshF e_asinF e_atan2F e_atanhF e_coshF e_expF e_fmodF \
@@ -67,7 +67,6 @@ libm-calls =								  \
 	w_atan2F w_atanhF w_coshF w_expF w_exp2F w_exp10F w_fmodF	  \
 	w_tgammaF w_hypotF w_j0F w_j1F w_jnF w_lgammaF w_lgammaF_r	  \
 	w_logF w_log10F w_powF w_remainderF w_scalbF w_sinhF w_sqrtF	  \
-	w_ilogbF							  \
 	s_fpclassifyF s_truncF						  \
 	s_remquoF e_log2F e_exp2F s_roundF s_nearbyintF s_sincosF	  \
 	s_fmaF s_lrintF s_llrintF s_lroundF s_llroundF e_exp10F w_log2F	  \
diff --git a/math/w_ilogb.c b/math/w_ilogb_template.c
index 3bbe5ec96b..acc7002617 100644
--- a/math/w_ilogb.c
+++ b/math/w_ilogb_template.c
@@ -1,6 +1,6 @@
-/* Copyright (C) 2012-2016 Free Software Foundation, Inc.
+/* Wrapper to set errno for ilogb.
+   Copyright (C) 2012-2016 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Adhemerval Zanella <azanella@linux.vnet.ibm.com>, 2011.
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
@@ -23,9 +23,9 @@
 
 /* wrapper ilogb */
 int
-__ilogb (double x)
+M_DECL_FUNC (__ilogb) (FLOAT x)
 {
-  int r = __ieee754_ilogb (x);
+  int r = M_SUF (__ieee754_ilogb) (x);
   if (__builtin_expect (r == FP_ILOGB0, 0)
       || __builtin_expect (r == FP_ILOGBNAN, 0)
       || __builtin_expect (r == INT_MAX, 0))
@@ -35,8 +35,8 @@ __ilogb (double x)
     }
   return r;
 }
-weak_alias (__ilogb, ilogb)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__ilogb, __ilogbl)
-weak_alias (__ilogb, ilogbl)
+declare_mgen_alias (__ilogb, ilogb)
+
+#if M_LIBM_NEED_COMPAT (ilogb)
+declare_mgen_libm_compat (__ilogb, ilogb)
 #endif
diff --git a/math/w_ilogbf.c b/math/w_ilogbf.c
deleted file mode 100644
index 92bf2df368..0000000000
--- a/math/w_ilogbf.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/* Copyright (C) 2012-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Adhemerval Zanella <azanella@linux.vnet.ibm.com>, 2011.
-
-   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 <errno.h>
-#include <limits.h>
-#include <math_private.h>
-
-/* wrapper ilogbf */
-int
-__ilogbf (float x)
-{
-  int r = __ieee754_ilogbf (x);
-  if (__builtin_expect (r == FP_ILOGB0, 0)
-      || __builtin_expect (r == FP_ILOGBNAN, 0)
-      || __builtin_expect (r == INT_MAX, 0))
-    {
-      __set_errno (EDOM);
-      feraiseexcept (FE_INVALID);
-    }
-  return r;
-}
-weak_alias (__ilogbf, ilogbf)
diff --git a/math/w_ilogbl.c b/math/w_ilogbl.c
deleted file mode 100644
index 165772a759..0000000000
--- a/math/w_ilogbl.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/* Copyright (C) 2012-2016 Free Software Foundation, Inc.
-   This file is part of the GNU C Library.
-   Contributed by Adhemerval Zanella <azanella@linux.vnet.ibm.com>, 2011.
-
-   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 <errno.h>
-#include <limits.h>
-#include <math_private.h>
-
-/* wrapper ilogbl */
-int
-__ilogbl (long double x)
-{
-  int r = __ieee754_ilogbl (x);
-  if (__builtin_expect (r == FP_ILOGB0, 0)
-      || __builtin_expect (r == FP_ILOGBNAN, 0)
-      || __builtin_expect (r == INT_MAX, 0))
-    {
-      __set_errno (EDOM);
-      feraiseexcept (FE_INVALID);
-    }
-  return r;
-}
-weak_alias (__ilogbl, ilogbl)
diff --git a/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h b/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
index 2569607283..545482ed1b 100644
--- a/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
+++ b/sysdeps/ieee754/ldbl-opt/math-type-macros-double.h
@@ -47,6 +47,7 @@
 #define LDOUBLE_fdiml_libm_version GLIBC_2_1
 #define LDOUBLE_fmaxl_libm_version GLIBC_2_1
 #define LDOUBLE_fminl_libm_version GLIBC_2_1
+#define LDOUBLE_ilogbl_libm_version GLIBC_2_0
 #define LDOUBLE_nanl_libm_version GLIBC_2_1
 
 /* Define compat symbols for long double on platforms
diff --git a/sysdeps/ieee754/ldbl-opt/w_ilogb.c b/sysdeps/ieee754/ldbl-opt/w_ilogb.c
deleted file mode 100644
index f518087a5f..0000000000
--- a/sysdeps/ieee754/ldbl-opt/w_ilogb.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#include <math/w_ilogb.c>
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
-compat_symbol (libm, __ilogb, ilogbl, GLIBC_2_0);
-#endif
diff --git a/sysdeps/ieee754/ldbl-opt/w_ilogbl.c b/sysdeps/ieee754/ldbl-opt/w_ilogbl.c
deleted file mode 100644
index 36f83f6ade..0000000000
--- a/sysdeps/ieee754/ldbl-opt/w_ilogbl.c
+++ /dev/null
@@ -1,5 +0,0 @@
-#include <math_ldbl_opt.h>
-#undef weak_alias
-#define weak_alias(n,a)
-#include <math/w_ilogbl.c>
-long_double_symbol (libm, __ilogbl, ilogbl);