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changeset 12936:9be4aca41cee

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math: Avoid #define replacements in C++ mode.
author Bruno Haible <bruno@clisp.org>
date Mon, 08 Mar 2010 01:10:14 +0100
parents 3e591f7f34d8
children dbc0820f9ddc
files ChangeLog lib/math.in.h modules/math
diffstat 3 files changed, 205 insertions(+), 79 deletions(-) [+]
line wrap: on
line diff
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2010-03-07  Bruno Haible  <bruno@clisp.org>
 
+	math: Avoid #define replacements in C++ mode.
+	* lib/math.in.h: Include c++defs.h.
+	(frexp, acosl, asinl, atanl, ceilf, ceill, cosl, expl, floorf, floorl,
+	frexpl, ldexpl, logl, roundf, round, roundl, sinl, sqrtl, tanl, truncf,
+	trunc, truncl): In C++, define a namespaced alias symbol.
+	* modules/math (Depends-on): Add c++defs.
+	(Makefile.am): Update math.h rule.
+
 	locale: Avoid #define replacements in C++ mode.
 	* lib/locale.in.h: Include c++defs.h.
 	(duplocale): In C++, define a namespaced alias symbol.
--- a/lib/math.in.h
+++ b/lib/math.in.h
@@ -28,6 +28,8 @@
 #define _GL_MATH_H
 
 
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
 /* The definition of _GL_ARG_NONNULL is copied here.  */
 
 /* The definition of _GL_WARN_ON_USE is copied here.  */
@@ -64,11 +66,6 @@
    : rpl_ ## func ## l (value))
 
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
 /* POSIX allows platforms that don't support NAN.  But all major
    machines in the past 15 years have supported something close to
    IEEE NaN, so we define this unconditionally.  We also must define
@@ -107,9 +104,15 @@
    Store exp in *EXPPTR and return mantissa.  */
 #if @GNULIB_FREXP@
 # if @REPLACE_FREXP@
-#  define frexp rpl_frexp
-extern double frexp (double x, int *expptr) _GL_ARG_NONNULL ((2));
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define frexp rpl_frexp
+#  endif
+_GL_FUNCDECL_RPL (frexp, double, (double x, int *expptr) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (frexp, double, (double x, int *expptr));
+# else
+_GL_CXXALIAS_SYS (frexp, double, (double x, int *expptr));
 # endif
+_GL_CXXALIASWARN (frexp);
 #elif defined GNULIB_POSIXCHECK
 # undef frexp
 /* Assume frexp is always declared.  */
@@ -120,7 +123,7 @@
 
 #if @GNULIB_LOGB@
 # if !@HAVE_DECL_LOGB@
-extern double logb (double x);
+_GL_EXTERN_C double logb (double x);
 # endif
 #elif defined GNULIB_POSIXCHECK
 # undef logb
@@ -133,8 +136,10 @@
 
 #if @GNULIB_ACOSL@
 # if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@
-extern long double acosl (long double x);
+_GL_FUNCDECL_SYS (acosl, long double, (long double x));
 # endif
+_GL_CXXALIAS_SYS (acosl, long double, (long double x));
+_GL_CXXALIASWARN (acosl);
 #elif defined GNULIB_POSIXCHECK
 # undef acosl
 # if HAVE_RAW_DECL_ACOSL
@@ -146,8 +151,10 @@
 
 #if @GNULIB_ASINL@
 # if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@
-extern long double asinl (long double x);
+_GL_FUNCDECL_SYS (asinl, long double, (long double x));
 # endif
+_GL_CXXALIAS_SYS (asinl, long double, (long double x));
+_GL_CXXALIASWARN (asinl);
 #elif defined GNULIB_POSIXCHECK
 # undef asinl
 # if HAVE_RAW_DECL_ASINL
@@ -159,8 +166,10 @@
 
 #if @GNULIB_ATANL@
 # if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@
-extern long double atanl (long double x);
+_GL_FUNCDECL_SYS (atanl, long double, (long double x));
 # endif
+_GL_CXXALIAS_SYS (atanl, long double, (long double x));
+_GL_CXXALIASWARN (atanl);
 #elif defined GNULIB_POSIXCHECK
 # undef atanl
 # if HAVE_RAW_DECL_ATANL
@@ -172,9 +181,15 @@
 
 #if @GNULIB_CEILF@
 # if @REPLACE_CEILF@
-#  define ceilf rpl_ceilf
-extern float ceilf (float x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define ceilf rpl_ceilf
+#  endif
+_GL_FUNCDECL_RPL (ceilf, float, (float x));
+_GL_CXXALIAS_RPL (ceilf, float, (float x));
+#else
+_GL_CXXALIAS_SYS (ceilf, float, (float x));
 # endif
+_GL_CXXALIASWARN (ceilf);
 #elif defined GNULIB_POSIXCHECK
 # undef ceilf
 # if HAVE_RAW_DECL_CEILF
@@ -185,9 +200,15 @@
 
 #if @GNULIB_CEILL@
 # if @REPLACE_CEILL@
-#  define ceill rpl_ceill
-extern long double ceill (long double x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define ceill rpl_ceill
+#  endif
+_GL_FUNCDECL_RPL (ceill, long double, (long double x));
+_GL_CXXALIAS_RPL (ceill, long double, (long double x));
+# else
+_GL_CXXALIAS_SYS (ceill, long double, (long double x));
 # endif
+_GL_CXXALIASWARN (ceill);
 #elif defined GNULIB_POSIXCHECK
 # undef ceill
 # if HAVE_RAW_DECL_CEILL
@@ -199,12 +220,19 @@
 
 #if @GNULIB_COSL@
 # if !@HAVE_COSL@
-#  undef cosl
-#  define cosl rpl_cosl
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef cosl
+#   define cosl rpl_cosl
+#  endif
+_GL_FUNCDECL_RPL (cosl, long double, (long double x));
+_GL_CXXALIAS_RPL (cosl, long double, (long double x));
+# else
+#  if !@HAVE_DECL_COSL@
+_GL_FUNCDECL_SYS (cosl, long double, (long double x));
+#  endif
+_GL_CXXALIAS_SYS (cosl, long double, (long double x));
 # endif
-# if !@HAVE_COSL@ || !@HAVE_DECL_COSL@
-extern long double cosl (long double x);
-# endif
+_GL_CXXALIASWARN (cosl);
 #elif defined GNULIB_POSIXCHECK
 # undef cosl
 # if HAVE_RAW_DECL_COSL
@@ -216,8 +244,10 @@
 
 #if @GNULIB_EXPL@
 # if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@
-extern long double expl (long double x);
+_GL_FUNCDECL_SYS (expl, long double, (long double x));
 # endif
+_GL_CXXALIAS_SYS (expl, long double, (long double x));
+_GL_CXXALIASWARN (expl);
 #elif defined GNULIB_POSIXCHECK
 # undef expl
 # if HAVE_RAW_DECL_EXPL
@@ -229,9 +259,15 @@
 
 #if @GNULIB_FLOORF@
 # if @REPLACE_FLOORF@
-#  define floorf rpl_floorf
-extern float floorf (float x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define floorf rpl_floorf
+#  endif
+_GL_FUNCDECL_RPL (floorf, float, (float x));
+_GL_CXXALIAS_RPL (floorf, float, (float x));
+#else
+_GL_CXXALIAS_SYS (floorf, float, (float x));
 # endif
+_GL_CXXALIASWARN (floorf);
 #elif defined GNULIB_POSIXCHECK
 # undef floorf
 # if HAVE_RAW_DECL_FLOORF
@@ -242,9 +278,15 @@
 
 #if @GNULIB_FLOORL@
 # if @REPLACE_FLOORL@
-#  define floorl rpl_floorl
-extern long double floorl (long double x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define floorl rpl_floorl
+#  endif
+_GL_FUNCDECL_RPL (floorl, long double, (long double x));
+_GL_CXXALIAS_RPL (floorl, long double, (long double x));
+# else
+_GL_CXXALIAS_SYS (floorl, long double, (long double x));
 # endif
+_GL_CXXALIASWARN (floorl);
 #elif defined GNULIB_POSIXCHECK
 # undef floorl
 # if HAVE_RAW_DECL_FLOORL
@@ -262,10 +304,23 @@
      If x is infinite or NaN: mantissa = x, exp unspecified.
    Store exp in *EXPPTR and return mantissa.  */
 #if @GNULIB_FREXPL@ && @REPLACE_FREXPL@
-# define frexpl rpl_frexpl
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  define frexpl rpl_frexpl
+# endif
+_GL_FUNCDECL_RPL (frexpl, long double,
+                  (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (frexpl, long double, (long double x, int *expptr));
+#else
+# if !@HAVE_DECL_FREXPL@
+_GL_FUNCDECL_SYS (frexpl, long double,
+                  (long double x, int *expptr) _GL_ARG_NONNULL ((2)));
+# endif
+# if @GNULIB_FREXPL@
+_GL_CXXALIAS_SYS (frexpl, long double, (long double x, int *expptr));
+# endif
 #endif
-#if (@GNULIB_FREXPL@ && @REPLACE_FREXPL@) || !@HAVE_DECL_FREXPL@
-extern long double frexpl (long double x, int *expptr) _GL_ARG_NONNULL ((2));
+#if @GNULIB_FREXPL@
+_GL_CXXALIASWARN (frexpl);
 #endif
 #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK
 # undef frexpl
@@ -278,10 +333,21 @@
 
 /* Return x * 2^exp.  */
 #if @GNULIB_LDEXPL@ && @REPLACE_LDEXPL@
-# define ldexpl rpl_ldexpl
+# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#  define ldexpl rpl_ldexpl
+# endif
+_GL_FUNCDECL_RPL (ldexpl, long double, (long double x, int exp));
+_GL_CXXALIAS_RPL (ldexpl, long double, (long double x, int exp));
+#else
+# if !@HAVE_DECL_LDEXPL@
+_GL_FUNCDECL_SYS (ldexpl, long double, (long double x, int exp));
+# endif
+# if @GNULIB_LDEXPL@
+_GL_CXXALIAS_SYS (ldexpl, long double, (long double x, int exp));
+# endif
 #endif
-#if (@GNULIB_LDEXPL@ && @REPLACE_LDEXPL@) || !@HAVE_DECL_LDEXPL@
-extern long double ldexpl (long double x, int exp);
+#if @GNULIB_LDEXPL@
+_GL_CXXALIASWARN (ldexpl);
 #endif
 #if !@GNULIB_LDEXPL@ && defined GNULIB_POSIXCHECK
 # undef ldexpl
@@ -294,12 +360,19 @@
 
 #if @GNULIB_LOGL@
 # if !@HAVE_LOGL@
-#  undef logl
-#  define logl rpl_logl
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef logl
+#   define logl rpl_logl
+#  endif
+_GL_FUNCDECL_RPL (logl, long double, (long double x));
+_GL_CXXALIAS_RPL (logl, long double, (long double x));
+# else
+#  if !@HAVE_DECL_LOGL@
+_GL_FUNCDECL_SYS (logl, long double, (long double x));
+#  endif
+_GL_CXXALIAS_SYS (logl, long double, (long double x));
 # endif
-# if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@
-extern long double logl (long double x);
-# endif
+_GL_CXXALIASWARN (logl);
 #elif defined GNULIB_POSIXCHECK
 # undef logl
 # if HAVE_RAW_DECL_LOGL
@@ -311,10 +384,16 @@
 
 #if @GNULIB_ROUNDF@
 # if @REPLACE_ROUNDF@
-#  undef roundf
-#  define roundf rpl_roundf
-extern float roundf (float x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef roundf
+#   define roundf rpl_roundf
+#  endif
+_GL_FUNCDECL_RPL (roundf, float, (float x));
+_GL_CXXALIAS_RPL (roundf, float, (float x));
+# else
+_GL_CXXALIAS_SYS (roundf, float, (float x));
 # endif
+_GL_CXXALIASWARN (roundf);
 #elif defined GNULIB_POSIXCHECK
 # undef roundf
 # if HAVE_RAW_DECL_ROUNDF
@@ -325,10 +404,16 @@
 
 #if @GNULIB_ROUND@
 # if @REPLACE_ROUND@
-#  undef round
-#  define round rpl_round
-extern double round (double x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef round
+#   define round rpl_round
+#  endif
+_GL_FUNCDECL_RPL (round, double, (double x));
+_GL_CXXALIAS_RPL (round, double, (double x));
+# else
+_GL_CXXALIAS_SYS (round, double, (double x));
 # endif
+_GL_CXXALIASWARN (round);
 #elif defined GNULIB_POSIXCHECK
 # undef round
 # if HAVE_RAW_DECL_ROUND
@@ -339,10 +424,16 @@
 
 #if @GNULIB_ROUNDL@
 # if @REPLACE_ROUNDL@
-#  undef roundl
-#  define roundl rpl_roundl
-extern long double roundl (long double x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef roundl
+#   define roundl rpl_roundl
+#  endif
+_GL_FUNCDECL_RPL (roundl, long double, (long double x));
+_GL_CXXALIAS_RPL (roundl, long double, (long double x));
+# else
+_GL_CXXALIAS_SYS (roundl, long double, (long double x));
 # endif
+_GL_CXXALIASWARN (roundl);
 #elif defined GNULIB_POSIXCHECK
 # undef roundl
 # if HAVE_RAW_DECL_ROUNDL
@@ -354,12 +445,19 @@
 
 #if @GNULIB_SINL@
 # if !@HAVE_SINL@
-#  undef sinl
-#  define sinl rpl_sinl
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef sinl
+#   define sinl rpl_sinl
+#  endif
+_GL_FUNCDECL_RPL (sinl, long double, (long double x));
+_GL_CXXALIAS_RPL (sinl, long double, (long double x));
+# else
+#  if !@HAVE_DECL_SINL@
+_GL_FUNCDECL_SYS (sinl, long double, (long double x));
+#  endif
+_GL_CXXALIAS_SYS (sinl, long double, (long double x));
 # endif
-# if !@HAVE_SINL@ || !@HAVE_DECL_SINL@
-extern long double sinl (long double x);
-# endif
+_GL_CXXALIASWARN (sinl);
 #elif defined GNULIB_POSIXCHECK
 # undef sinl
 # if HAVE_RAW_DECL_SINL
@@ -371,8 +469,10 @@
 
 #if @GNULIB_SQRTL@
 # if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@
-extern long double sqrtl (long double x);
+_GL_FUNCDECL_SYS (sqrtl, long double, (long double x));
 # endif
+_GL_CXXALIAS_SYS (sqrtl, long double, (long double x));
+_GL_CXXALIASWARN (sqrtl);
 #elif defined GNULIB_POSIXCHECK
 # undef sqrtl
 # if HAVE_RAW_DECL_SQRTL
@@ -384,8 +484,10 @@
 
 #if @GNULIB_TANL@
 # if !@HAVE_TANL@ || !@HAVE_DECL_TANL@
-extern long double tanl (long double x);
+_GL_FUNCDECL_SYS (tanl, long double, (long double x));
 # endif
+_GL_CXXALIAS_SYS (tanl, long double, (long double x));
+_GL_CXXALIASWARN (tanl);
 #elif defined GNULIB_POSIXCHECK
 # undef tanl
 # if HAVE_RAW_DECL_TANL
@@ -397,9 +499,15 @@
 
 #if @GNULIB_TRUNCF@
 # if !@HAVE_DECL_TRUNCF@
-#  define truncf rpl_truncf
-extern float truncf (float x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define truncf rpl_truncf
+#  endif
+_GL_FUNCDECL_RPL (truncf, float, (float x));
+_GL_CXXALIAS_RPL (truncf, float, (float x));
+# else
+_GL_CXXALIAS_SYS (truncf, float, (float x));
 # endif
+_GL_CXXALIASWARN (truncf);
 #elif defined GNULIB_POSIXCHECK
 # undef truncf
 # if HAVE_RAW_DECL_TRUNCF
@@ -410,9 +518,15 @@
 
 #if @GNULIB_TRUNC@
 # if !@HAVE_DECL_TRUNC@
-#  define trunc rpl_trunc
-extern double trunc (double x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   define trunc rpl_trunc
+#  endif
+_GL_FUNCDECL_RPL (trunc, double, (double x));
+_GL_CXXALIAS_RPL (trunc, double, (double x));
+# else
+_GL_CXXALIAS_SYS (trunc, double, (double x));
 # endif
+_GL_CXXALIASWARN (trunc);
 #elif defined GNULIB_POSIXCHECK
 # undef trunc
 # if HAVE_RAW_DECL_TRUNC
@@ -423,10 +537,16 @@
 
 #if @GNULIB_TRUNCL@
 # if @REPLACE_TRUNCL@
-#  undef truncl
-#  define truncl rpl_truncl
-extern long double truncl (long double x);
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef truncl
+#   define truncl rpl_truncl
+#  endif
+_GL_FUNCDECL_RPL (truncl, long double, (long double x));
+_GL_CXXALIAS_RPL (truncl, long double, (long double x));
+# else
+_GL_CXXALIAS_SYS (truncl, long double, (long double x));
 # endif
+_GL_CXXALIASWARN (truncl);
 #elif defined GNULIB_POSIXCHECK
 # undef truncl
 # if HAVE_RAW_DECL_TRUNCL
@@ -438,9 +558,9 @@
 
 #if @GNULIB_ISFINITE@
 # if @REPLACE_ISFINITE@
-extern int gl_isfinitef (float x);
-extern int gl_isfinited (double x);
-extern int gl_isfinitel (long double x);
+_GL_EXTERN_C int gl_isfinitef (float x);
+_GL_EXTERN_C int gl_isfinited (double x);
+_GL_EXTERN_C int gl_isfinitel (long double x);
 #  undef isfinite
 #  define isfinite(x) \
    (sizeof (x) == sizeof (long double) ? gl_isfinitel (x) : \
@@ -458,9 +578,9 @@
 
 #if @GNULIB_ISINF@
 # if @REPLACE_ISINF@
-extern int gl_isinff (float x);
-extern int gl_isinfd (double x);
-extern int gl_isinfl (long double x);
+_GL_EXTERN_C int gl_isinff (float x);
+_GL_EXTERN_C int gl_isinfd (double x);
+_GL_EXTERN_C int gl_isinfl (long double x);
 #  undef isinf
 #  define isinf(x) \
    (sizeof (x) == sizeof (long double) ? gl_isinfl (x) : \
@@ -493,7 +613,7 @@
 /* Test whether X is a NaN.  */
 #  undef isnanf
 #  define isnanf rpl_isnanf
-extern int isnanf (float x);
+_GL_EXTERN_C int isnanf (float x);
 # endif
 #endif
 
@@ -515,7 +635,7 @@
 /* Test whether X is a NaN.  */
 #  undef isnand
 #  define isnand rpl_isnand
-extern int isnand (double x);
+_GL_EXTERN_C int isnand (double x);
 # endif
 #endif
 
@@ -535,7 +655,7 @@
 /* Test whether X is a NaN.  */
 #  undef isnanl
 #  define isnanl rpl_isnanl
-extern int isnanl (long double x);
+_GL_EXTERN_C int isnanl (long double x);
 # endif
 #endif
 
@@ -549,19 +669,19 @@
 #  if @HAVE_ISNANF@ && __GNUC__ >= 4
 #   define gl_isnan_f(x) __builtin_isnan ((float)(x))
 #  else
-extern int rpl_isnanf (float x);
+_GL_EXTERN_C int rpl_isnanf (float x);
 #   define gl_isnan_f(x) rpl_isnanf (x)
 #  endif
 #  if @HAVE_ISNAND@ && __GNUC__ >= 4
 #   define gl_isnan_d(x) __builtin_isnan ((double)(x))
 #  else
-extern int rpl_isnand (double x);
+_GL_EXTERN_C int rpl_isnand (double x);
 #   define gl_isnan_d(x) rpl_isnand (x)
 #  endif
 #  if @HAVE_ISNANL@ && __GNUC__ >= 4
 #   define gl_isnan_l(x) __builtin_isnan ((long double)(x))
 #  else
-extern int rpl_isnanl (long double x);
+_GL_EXTERN_C int rpl_isnanl (long double x);
 #   define gl_isnan_l(x) rpl_isnanl (x)
 #  endif
 #  undef isnan
@@ -590,9 +710,9 @@
 # endif
 # if @REPLACE_SIGNBIT@
 #  undef signbit
-extern int gl_signbitf (float arg);
-extern int gl_signbitd (double arg);
-extern int gl_signbitl (long double arg);
+_GL_EXTERN_C int gl_signbitf (float arg);
+_GL_EXTERN_C int gl_signbitd (double arg);
+_GL_EXTERN_C int gl_signbitl (long double arg);
 #  if __GNUC__ >= 2 && !__STRICT_ANSI__
 #   if defined FLT_SIGNBIT_WORD && defined FLT_SIGNBIT_BIT && !defined gl_signbitf
 #    define gl_signbitf_OPTIMIZED_MACRO
@@ -639,9 +759,5 @@
 #endif
 
 
-#ifdef __cplusplus
-}
-#endif
-
 #endif /* _GL_MATH_H */
 #endif /* _GL_MATH_H */
--- a/modules/math
+++ b/modules/math
@@ -7,6 +7,7 @@
 
 Depends-on:
 arg-nonnull
+c++defs
 include_next
 warn-on-use
 
@@ -18,7 +19,7 @@
 
 # We need the following in order to create <math.h> when the system
 # doesn't have one that works with the given compiler.
-math.h: math.in.h $(WARN_ON_USE_H) $(ARG_NONNULL_H)
+math.h: math.in.h $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
 	$(AM_V_GEN)rm -f $@-t $@ && \
 	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */' && \
 	  sed -e 's|@''INCLUDE_NEXT_AS_FIRST_DIRECTIVE''@|$(INCLUDE_NEXT_AS_FIRST_DIRECTIVE)|g' \
@@ -98,6 +99,7 @@
 	      -e 's|@''REPLACE_SIGNBIT''@|$(REPLACE_SIGNBIT)|g' \
 	      -e 's|@''REPLACE_SIGNBIT_USING_GCC''@|$(REPLACE_SIGNBIT_USING_GCC)|g' \
 	      -e 's|@''REPLACE_TRUNCL''@|$(REPLACE_TRUNCL)|g' \
+	      -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
 	      -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
 	      -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
 	      < $(srcdir)/math.in.h; \