Wrap the remaining math functions in libc: __fpclassify*(), __flt_rounds(),

and ldexp().

ok millert@

25 files changed, 113 insertions, 30 deletions

diff --git a/lib/libc/arch/alpha/gen/flt_rounds.c b/lib/libc/arch/alpha/gen/flt_rounds.c
index 0aed2da75aa..71e96b549d3 100644
--- a/lib/libc/arch/alpha/gen/flt_rounds.c
+++ b/lib/libc/arch/alpha/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.6 2012/06/25 17:01:09 deraadt Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.7 2015/10/27 05:54:49 guenther Exp $	*/
 /*	$NetBSD: flt_rounds.c,v 1.1 1995/04/29 05:09:53 cgd Exp $	*/
 
 /*
@@ -55,3 +55,4 @@ __flt_rounds()
 
 	return map[(old >> 58) & 0x3];
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/amd64/gen/flt_rounds.S b/lib/libc/arch/amd64/gen/flt_rounds.S
index d313ed3d40e..b0def90d548 100644
--- a/lib/libc/arch/amd64/gen/flt_rounds.S
+++ b/lib/libc/arch/amd64/gen/flt_rounds.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.S,v 1.4 2015/05/29 08:50:12 uebayasi Exp $	*/
+/*	$OpenBSD: flt_rounds.S,v 1.5 2015/10/27 05:54:49 guenther Exp $	*/
 /*	$NetBSD: flt_rounds.S,v 1.2 2002/06/06 23:04:35 fvdl Exp $	*/
 
 /*
@@ -6,7 +6,7 @@
  * Public domain.
  */
 
-#include <machine/asm.h>
+#include "SYS.h"
 
 	.text
 	_ALIGN_TEXT
@@ -28,4 +28,4 @@ ENTRY(__flt_rounds)
 	movb _map(,%rax,1),%al
 #endif
 	ret
-END(__flt_rounds)
+END_STRONG(__flt_rounds)
diff --git a/lib/libc/arch/amd64/gen/fpclassifyl.c b/lib/libc/arch/amd64/gen/fpclassifyl.c
index 19940cdd53d..01df203baa3 100644
--- a/lib/libc/arch/amd64/gen/fpclassifyl.c
+++ b/lib/libc/arch/amd64/gen/fpclassifyl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fpclassifyl.c,v 1.1 2008/09/07 20:36:07 martynas Exp $	*/
+/*	$OpenBSD: fpclassifyl.c,v 1.2 2015/10/27 05:54:49 guenther Exp $	*/
 /*
  * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
  *
@@ -42,3 +42,4 @@ __fpclassifyl(long double e)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassifyl);
diff --git a/lib/libc/arch/amd64/gen/ldexp.c b/lib/libc/arch/amd64/gen/ldexp.c
index bfd89d8781c..e0bd213b8f1 100644
--- a/lib/libc/arch/amd64/gen/ldexp.c
+++ b/lib/libc/arch/amd64/gen/ldexp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ldexp.c,v 1.4 2015/01/04 16:12:42 daniel Exp $	*/
+/*	$OpenBSD: ldexp.c,v 1.5 2015/10/27 05:54:49 guenther Exp $	*/
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -47,3 +47,4 @@ ldexp(double value, int exp)
 		: "0" (value), "u" ((double)exp));
 	return (temp);
 }
+DEF_STRONG(ldexp);
diff --git a/lib/libc/arch/arm/gen/flt_rounds.c b/lib/libc/arch/arm/gen/flt_rounds.c
index 820a07a8b48..98497051c16 100644
--- a/lib/libc/arch/arm/gen/flt_rounds.c
+++ b/lib/libc/arch/arm/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.4 2015/10/18 19:30:39 guenther Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.5 2015/10/27 05:54:49 guenther Exp $	*/
 /*	$NetBSD: flt_rounds.c,v 1.1 2000/12/29 20:13:48 bjh21 Exp $	*/
 
 /*
@@ -74,3 +74,4 @@ __flt_rounds()
 {
 	return(map[fpgetround()]);
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/hppa/gen/flt_rounds.c b/lib/libc/arch/hppa/gen/flt_rounds.c
index 6defc4fb09e..68ee3a5c6f3 100644
--- a/lib/libc/arch/hppa/gen/flt_rounds.c
+++ b/lib/libc/arch/hppa/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.5 2014/04/18 15:09:52 guenther Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.6 2015/10/27 05:54:49 guenther Exp $	*/
 
 /*
  * Written by Miodrag Vallat.  Public domain.
@@ -22,3 +22,4 @@ __flt_rounds()
 	__asm__ volatile("fstd %%fr0,0(%1)" : "=m" (fpsr) : "r" (&fpsr));
 	return map[(fpsr >> 41) & 0x03];
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/hppa64/gen/flt_rounds.c b/lib/libc/arch/hppa64/gen/flt_rounds.c
index 2947ce7e5c0..9323e81e29e 100644
--- a/lib/libc/arch/hppa64/gen/flt_rounds.c
+++ b/lib/libc/arch/hppa64/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.3 2014/04/18 15:09:52 guenther Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.4 2015/10/27 05:54:49 guenther Exp $	*/
 
 /*
  * Written by Miodrag Vallat.  Public domain.
@@ -22,3 +22,4 @@ __flt_rounds()
 	__asm__ volatile("fstd %%fr0,0(%1)" : "=m" (fpsr) : "r" (&fpsr));
 	return map[(fpsr >> 41) & 0x03];
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/i386/gen/flt_rounds.S b/lib/libc/arch/i386/gen/flt_rounds.S
index 968d5a2eed3..e42ad93b214 100644
--- a/lib/libc/arch/i386/gen/flt_rounds.S
+++ b/lib/libc/arch/i386/gen/flt_rounds.S
@@ -1,10 +1,10 @@
-/* $OpenBSD: flt_rounds.S,v 1.4 2012/08/22 17:19:34 pascal Exp $ */
+/* $OpenBSD: flt_rounds.S,v 1.5 2015/10/27 05:54:49 guenther Exp $ */
 /*
  * Written by J.T. Conklin, Apr 4, 1995
  * Public domain.
  */
 
-#include <machine/asm.h>
+#include "SYS.h"
 
 	.text
 	.align 2
@@ -30,3 +30,4 @@ ENTRY(__flt_rounds)
 #endif
 	addl $4,%esp
 	ret
+END_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/i386/gen/fpclassifyl.c b/lib/libc/arch/i386/gen/fpclassifyl.c
index 19940cdd53d..01df203baa3 100644
--- a/lib/libc/arch/i386/gen/fpclassifyl.c
+++ b/lib/libc/arch/i386/gen/fpclassifyl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fpclassifyl.c,v 1.1 2008/09/07 20:36:07 martynas Exp $	*/
+/*	$OpenBSD: fpclassifyl.c,v 1.2 2015/10/27 05:54:49 guenther Exp $	*/
 /*
  * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
  *
@@ -42,3 +42,4 @@ __fpclassifyl(long double e)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassifyl);
diff --git a/lib/libc/arch/i386/gen/ldexp.c b/lib/libc/arch/i386/gen/ldexp.c
index 7fc04aa619a..2df2b04b0d0 100644
--- a/lib/libc/arch/i386/gen/ldexp.c
+++ b/lib/libc/arch/i386/gen/ldexp.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ldexp.c,v 1.8 2015/01/04 16:12:42 daniel Exp $ */
+/* $OpenBSD: ldexp.c,v 1.9 2015/10/27 05:54:49 guenther Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -46,3 +46,4 @@ ldexp(double value, int exp)
 		: "0" (value), "u" ((double)exp));
 	return (temp);
 }
+DEF_STRONG(ldexp);
diff --git a/lib/libc/arch/m88k/gen/flt_rounds.c b/lib/libc/arch/m88k/gen/flt_rounds.c
index c7dd499f27a..7017e75a5ce 100644
--- a/lib/libc/arch/m88k/gen/flt_rounds.c
+++ b/lib/libc/arch/m88k/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.5 2013/01/05 11:20:55 miod Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.6 2015/10/27 05:54:49 guenther Exp $	*/
 
 /*
  * Written by J.T. Conklin, Apr 10, 1995
@@ -27,3 +27,4 @@ __flt_rounds()
 	__asm__("fldcr %0, %%fcr63" : "=r" (x));
 	return map[(x >> 14) & 0x03];
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/mips64/gen/flt_rounds.c b/lib/libc/arch/mips64/gen/flt_rounds.c
index 6351de0df69..33daeac727b 100644
--- a/lib/libc/arch/mips64/gen/flt_rounds.c
+++ b/lib/libc/arch/mips64/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.3 2012/06/25 17:01:11 deraadt Exp $ */
+/*	$OpenBSD: flt_rounds.c,v 1.4 2015/10/27 05:54:49 guenther Exp $ */
 /*
  * Written by J.T. Conklin, Apr 11, 1995
  * Public domain.
@@ -23,3 +23,4 @@ __flt_rounds()
 	__asm__("nop");
 	return map[x & 0x03];
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/mips64/gen/fpclassifyl.c b/lib/libc/arch/mips64/gen/fpclassifyl.c
index 030e9c8aac4..2b2839d4578 100644
--- a/lib/libc/arch/mips64/gen/fpclassifyl.c
+++ b/lib/libc/arch/mips64/gen/fpclassifyl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fpclassifyl.c,v 1.1 2008/09/07 20:36:07 martynas Exp $	*/
+/*	$OpenBSD: fpclassifyl.c,v 1.2 2015/10/27 05:54:49 guenther Exp $	*/
 /*
  * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
  *
@@ -42,3 +42,4 @@ __fpclassifyl(long double e)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassifyl);
diff --git a/lib/libc/arch/mips64/gen/ldexp.S b/lib/libc/arch/mips64/gen/ldexp.S
index 640406422c7..ba934bee580 100644
--- a/lib/libc/arch/mips64/gen/ldexp.S
+++ b/lib/libc/arch/mips64/gen/ldexp.S
@@ -1,4 +1,4 @@
-/* $OpenBSD: ldexp.S,v 1.6 2005/08/07 16:40:15 espie Exp $ */
+/* $OpenBSD: ldexp.S,v 1.7 2015/10/27 05:54:49 guenther Exp $ */
 /*-
  * Copyright (c) 1991, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  */
 
-#include <machine/asm.h>
+#include "SYS.h"
 
 #define DEXP_INF	0x7ff
 #define DEXP_BIAS	1023
@@ -164,4 +164,4 @@ LEAF(ldexp, 0)
 9:
 	mov.d	$f0, $f12		# yes, result is just x
 	j	ra
-END(ldexp)
+END_STRONG(ldexp)
diff --git a/lib/libc/arch/powerpc/gen/flt_rounds.c b/lib/libc/arch/powerpc/gen/flt_rounds.c
index a363eb1b1b2..d3976cede0a 100644
--- a/lib/libc/arch/powerpc/gen/flt_rounds.c
+++ b/lib/libc/arch/powerpc/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.5 2014/04/17 09:01:25 guenther Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.6 2015/10/27 05:54:49 guenther Exp $	*/
 /*	$NetBSD: flt_rounds.c,v 1.5 2001/05/25 12:14:05 simonb Exp $	*/
 
 /*
@@ -56,3 +56,4 @@ __flt_rounds()
 	return map[x & 0x03];
 #endif
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/sh/gen/flt_rounds.c b/lib/libc/arch/sh/gen/flt_rounds.c
index ae4b588223f..31fe8e2af30 100644
--- a/lib/libc/arch/sh/gen/flt_rounds.c
+++ b/lib/libc/arch/sh/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.4 2014/04/18 15:09:52 guenther Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.5 2015/10/27 05:54:49 guenther Exp $	*/
 /*
  * Copyright (c) 2006 Miodrag Vallat.
  *
@@ -39,3 +39,4 @@ __flt_rounds()
 	return rndmap[fpgetround()];
 #endif
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/sparc/gen/flt_rounds.c b/lib/libc/arch/sparc/gen/flt_rounds.c
index ab80b2e137b..df39481949a 100644
--- a/lib/libc/arch/sparc/gen/flt_rounds.c
+++ b/lib/libc/arch/sparc/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.6 2012/06/25 17:01:11 deraadt Exp $ */
+/*	$OpenBSD: flt_rounds.c,v 1.7 2015/10/27 05:54:49 guenther Exp $ */
 /*
  * Written by J.T. Conklin, Apr 10, 1995
  * Public domain.
@@ -22,3 +22,4 @@ __flt_rounds()
 	__asm__("st %%fsr,%0" : "=m" (*&x));
 	return map[(x >> 30) & 0x03];
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/sparc64/gen/flt_rounds.c b/lib/libc/arch/sparc64/gen/flt_rounds.c
index b4f1a312a9f..3310902f2a9 100644
--- a/lib/libc/arch/sparc64/gen/flt_rounds.c
+++ b/lib/libc/arch/sparc64/gen/flt_rounds.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: flt_rounds.c,v 1.3 2012/06/25 17:01:11 deraadt Exp $	*/
+/*	$OpenBSD: flt_rounds.c,v 1.4 2015/10/27 05:54:49 guenther Exp $	*/
 /*	$NetBSD: flt_rounds.c,v 1.1 1998/09/11 04:56:23 eeh Exp $	*/
 
 /*
@@ -24,3 +24,4 @@ __flt_rounds()
 	__asm__("st %%fsr,%0" : "=m" (*&x));
 	return map[(x >> 30) & 0x03];
 }
+DEF_STRONG(__flt_rounds);
diff --git a/lib/libc/arch/sparc64/gen/fpclassifyl.c b/lib/libc/arch/sparc64/gen/fpclassifyl.c
index d569ef90430..2b2839d4578 100644
--- a/lib/libc/arch/sparc64/gen/fpclassifyl.c
+++ b/lib/libc/arch/sparc64/gen/fpclassifyl.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fpclassifyl.c,v 1.1 2008/09/07 20:36:08 martynas Exp $	*/
+/*	$OpenBSD: fpclassifyl.c,v 1.2 2015/10/27 05:54:49 guenther Exp $	*/
 /*
  * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
  *
@@ -42,3 +42,4 @@ __fpclassifyl(long double e)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassifyl);
diff --git a/lib/libc/arch/vax/gen/fpclassify.c b/lib/libc/arch/vax/gen/fpclassify.c
index 59c7e3b1aa9..dc7b5e90b8f 100644
--- a/lib/libc/arch/vax/gen/fpclassify.c
+++ b/lib/libc/arch/vax/gen/fpclassify.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fpclassify.c,v 1.6 2013/03/28 18:09:38 martynas Exp $	*/
+/*	$OpenBSD: fpclassify.c,v 1.7 2015/10/27 05:54:49 guenther Exp $	*/
 /*
  * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
  *
@@ -29,6 +29,7 @@ __fpclassify(double d)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassify);
 
 int
 __fpclassifyf(float f)
@@ -41,5 +42,7 @@ __fpclassifyf(float f)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassifyf);
 
-__strong_alias(__fpclassifyl, __fpclassify);
+MAKE_CLONE(__fpclassifyl, __fpclassify);
+DEF_STRONG(__fpclassifyl);
diff --git a/lib/libc/arch/vax/gen/ldexp.S b/lib/libc/arch/vax/gen/ldexp.S
index b55d2083dda..e22491c9274 100644
--- a/lib/libc/arch/vax/gen/ldexp.S
+++ b/lib/libc/arch/vax/gen/ldexp.S
@@ -1,4 +1,4 @@
-/* $OpenBSD: ldexp.S,v 1.10 2013/07/05 21:10:50 miod Exp $ */
+/* $OpenBSD: ldexp.S,v 1.11 2015/10/27 05:54:49 guenther Exp $ */
 /*
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -75,6 +75,7 @@ ENTRY(ldexp, R2)
 1:
 	movl	$ ERANGE,_C_LABEL(errno)
 	ret
+END_STRONG(ldexp);
 
 	.data
 huge:	.word	0x7fff		/* the largest number that can */
diff --git a/lib/libc/gen/fpclassify.c b/lib/libc/gen/fpclassify.c
index b878d5ec921..33ae6922148 100644
--- a/lib/libc/gen/fpclassify.c
+++ b/lib/libc/gen/fpclassify.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: fpclassify.c,v 1.8 2013/07/03 04:46:36 espie Exp $	*/
+/*	$OpenBSD: fpclassify.c,v 1.9 2015/10/27 05:54:49 guenther Exp $	*/
 /*
  * Copyright (c) 2008 Martynas Venckus <martynas@openbsd.org>
  *
@@ -41,6 +41,7 @@ __fpclassify(double d)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassify);
 
 int
 __fpclassifyf(float f)
@@ -63,7 +64,9 @@ __fpclassifyf(float f)
 
 	return FP_NORMAL;
 }
+DEF_STRONG(__fpclassifyf);
 
 #if	LDBL_MANT_DIG == DBL_MANT_DIG
-__strong_alias(__fpclassifyl, __fpclassify);
+MAKE_CLONE(__fpclassifyl, __fpclassify);
+DEF_STRONG(__fpclassifyl);
 #endif	/* LDBL_MANT_DIG == DBL_MANT_DIG */
diff --git a/lib/libc/gen/ldexp.c b/lib/libc/gen/ldexp.c
index eb0829e7007..ebe33f9df91 100644
--- a/lib/libc/gen/ldexp.c
+++ b/lib/libc/gen/ldexp.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: ldexp.c,v 1.9 2014/07/21 01:51:10 guenther Exp $	*/
+/*	$OpenBSD: ldexp.c,v 1.10 2015/10/27 05:54:49 guenther Exp $	*/
 /* @(#)s_scalbn.c 5.1 93/09/24 */
 /* @(#)fdlibm.h 5.1 93/09/24 */
 /*
@@ -120,6 +120,7 @@ ldexp(double x, int n)
 	SET_HIGH_WORD(x,(hx&0x800fffff)|(k<<20));
         return x*twom54;
 }
+DEF_STRONG(ldexp);
 
 #if	LDBL_MANT_DIG == DBL_MANT_DIG
 __strong_alias(ldexpl, ldexp);
diff --git a/lib/libc/hidden/float.h b/lib/libc/hidden/float.h
new file mode 100644
index 00000000000..ea2cf5bae9a
--- /dev/null
+++ b/lib/libc/hidden/float.h
@@ -0,0 +1,25 @@
+/*	$OpenBSD: float.h,v 1.1 2015/10/27 05:54:49 guenther Exp $	*/
+/*
+ * Copyright (c) 2015 Philip Guenther <guenther@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LIBC_FLOAT_H_
+#define _LIBC_FLOAT_H_
+
+#include_next <float.h>
+
+PROTO_NORMAL(__flt_rounds);
+
+#endif	/* _LIBC_FLOAT_H_ */
diff --git a/lib/libc/hidden/math.h b/lib/libc/hidden/math.h
new file mode 100644
index 00000000000..dd8e4f456e9
--- /dev/null
+++ b/lib/libc/hidden/math.h
@@ -0,0 +1,33 @@
+/*	$OpenBSD: math.h,v 1.1 2015/10/27 05:54:49 guenther Exp $	*/
+/*
+ * Copyright (c) 2015 Philip Guenther <guenther@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _LIBC_MATH_H_
+#define _LIBC_MATH_H_
+
+#include_next <math.h>
+
+/*
+ * This file only wraps the handful of functions that are both
+ * defined and used by libc.
+ */
+
+PROTO_NORMAL(__fpclassify);
+PROTO_NORMAL(__fpclassifyf);
+PROTO_NORMAL(__fpclassifyl);
+PROTO_NORMAL(ldexp);
+
+#endif /* !_LIBC_MATH_H_ */