diff options
Diffstat (limited to 'lib/math.in.h')
| -rw-r--r-- | lib/math.in.h | 586 |
1 files changed, 383 insertions, 203 deletions
diff --git a/lib/math.in.h b/lib/math.in.h index d4940515..c0b2f341 100644 --- a/lib/math.in.h +++ b/lib/math.in.h @@ -1,6 +1,6 @@ /* A GNU-like <math.h>. - Copyright (C) 2002-2003, 2007-2009 Free Software Foundation, Inc. + Copyright (C) 2002-2003, 2007-2010 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by @@ -28,12 +28,42 @@ #define _GL_MATH_H -/* The definition of GL_LINK_WARNING is copied here. */ - - -#ifdef __cplusplus -extern "C" { -#endif +/* 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. */ + +/* Helper macros to define a portability warning for the + classification macro FUNC called with VALUE. POSIX declares the + classification macros with an argument of real-floating (that is, + one of float, double, or long double). */ +#define _GL_WARN_REAL_FLOATING_DECL(func) \ +static inline int \ +rpl_ ## func ## f (float f) \ +{ \ + return func (f); \ +} \ +static inline int \ +rpl_ ## func ## d (double d) \ +{ \ + return func (d); \ +} \ +static inline int \ +rpl_ ## func ## l (long double l) \ +{ \ + return func (l); \ +} \ +_GL_WARN_ON_USE (rpl_ ## func ## f, #func " is unportable - " \ + "use gnulib module " #func " for portability"); \ +_GL_WARN_ON_USE (rpl_ ## func ## d, #func " is unportable - " \ + "use gnulib module " #func " for portability"); \ +_GL_WARN_ON_USE (rpl_ ## func ## l, #func " is unportable - " \ + "use gnulib module " #func " for portability") +#define _GL_WARN_REAL_FLOATING_IMPL(func, value) \ + (sizeof (value) == sizeof (float) ? rpl_ ## func ## f (value) \ + : sizeof (value) == sizeof (double) ? rpl_ ## func ## d (value) \ + : rpl_ ## func ## l (value)) /* POSIX allows platforms that don't support NAN. But all major @@ -64,6 +94,7 @@ _NaN () # define HUGE_VAL (1.0 / 0.0) #endif + /* Write x as x = mantissa * 2^exp where @@ -73,130 +104,198 @@ _NaN () Store exp in *EXPPTR and return mantissa. */ #if @GNULIB_FREXP@ # if @REPLACE_FREXP@ -# define frexp rpl_frexp -extern double frexp (double x, int *expptr); +# 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 -# define frexp(x,e) \ - (GL_LINK_WARNING ("frexp is unportable - " \ - "use gnulib module frexp for portability"), \ - frexp (x, e)) +/* Assume frexp is always declared. */ +_GL_WARN_ON_USE (frexp, "frexp is unportable - " + "use gnulib module frexp for portability"); #endif -#if @GNULIB_MATHL@ || !@HAVE_DECL_ACOSL@ -extern long double acosl (long double x); +#if @GNULIB_LOGB@ +# if !@HAVE_DECL_LOGB@ +_GL_EXTERN_C double logb (double x); +# endif +#elif defined GNULIB_POSIXCHECK +# undef logb +# if HAVE_RAW_DECL_LOGB +_GL_WARN_ON_USE (logb, "logb is unportable - " + "use gnulib module logb for portability"); +# endif #endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK + + +#if @GNULIB_ACOSL@ +# if !@HAVE_ACOSL@ || !@HAVE_DECL_ACOSL@ +_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 -# define acosl(x) \ - (GL_LINK_WARNING ("acosl is unportable - " \ - "use gnulib module mathl for portability"), \ - acosl (x)) +# if HAVE_RAW_DECL_ACOSL +_GL_WARN_ON_USE (acosl, "acosl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif -#if @GNULIB_MATHL@ || !@HAVE_DECL_ASINL@ -extern long double asinl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_ASINL@ +# if !@HAVE_ASINL@ || !@HAVE_DECL_ASINL@ +_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 -# define asinl(x) \ - (GL_LINK_WARNING ("asinl is unportable - " \ - "use gnulib module mathl for portability"), \ - asinl (x)) +# if HAVE_RAW_DECL_ASINL +_GL_WARN_ON_USE (asinl, "asinl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif -#if @GNULIB_MATHL@ || !@HAVE_DECL_ATANL@ -extern long double atanl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_ATANL@ +# if !@HAVE_ATANL@ || !@HAVE_DECL_ATANL@ +_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 -# define atanl(x) \ - (GL_LINK_WARNING ("atanl is unportable - " \ - "use gnulib module mathl for portability"), \ - atanl (x)) +# if HAVE_RAW_DECL_ATANL +_GL_WARN_ON_USE (atanl, "atanl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif #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 +# if !@HAVE_DECL_CEILF@ +_GL_FUNCDECL_SYS (ceilf, float, (float x)); +# endif +_GL_CXXALIAS_SYS (ceilf, float, (float x)); # endif +_GL_CXXALIASWARN (ceilf); #elif defined GNULIB_POSIXCHECK # undef ceilf -# define ceilf(x) \ - (GL_LINK_WARNING ("ceilf is unportable - " \ - "use gnulib module ceilf for portability"), \ - ceilf (x)) +# if HAVE_RAW_DECL_CEILF +_GL_WARN_ON_USE (ceilf, "ceilf is unportable - " + "use gnulib module ceilf for portability"); +# endif #endif #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 +# if !@HAVE_DECL_CEILL@ +_GL_FUNCDECL_SYS (ceill, long double, (long double x)); +# endif +_GL_CXXALIAS_SYS (ceill, long double, (long double x)); # endif +_GL_CXXALIASWARN (ceill); #elif defined GNULIB_POSIXCHECK # undef ceill -# define ceill(x) \ - (GL_LINK_WARNING ("ceill is unportable - " \ - "use gnulib module ceill for portability"), \ - ceill (x)) +# if HAVE_RAW_DECL_CEILL +_GL_WARN_ON_USE (ceill, "ceill is unportable - " + "use gnulib module ceill for portability"); +# endif #endif -#if @GNULIB_MATHL@ || (!@HAVE_DECL_COSL@ && !defined cosl) -# undef cosl -extern long double cosl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_COSL@ +# if !@HAVE_COSL@ || !@HAVE_DECL_COSL@ +_GL_FUNCDECL_SYS (cosl, long double, (long double x)); +# endif +_GL_CXXALIAS_SYS (cosl, long double, (long double x)); +_GL_CXXALIASWARN (cosl); +#elif defined GNULIB_POSIXCHECK # undef cosl -# define cosl(x) \ - (GL_LINK_WARNING ("cosl is unportable - " \ - "use gnulib module mathl for portability"), \ - cosl (x)) +# if HAVE_RAW_DECL_COSL +_GL_WARN_ON_USE (cosl, "cosl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif -#if @GNULIB_MATHL@ || !@HAVE_DECL_EXPL@ -extern long double expl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_EXPL@ +# if !@HAVE_EXPL@ || !@HAVE_DECL_EXPL@ +_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 -# define expl(x) \ - (GL_LINK_WARNING ("expl is unportable - " \ - "use gnulib module mathl for portability"), \ - expl (x)) +# if HAVE_RAW_DECL_EXPL +_GL_WARN_ON_USE (expl, "expl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif #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 +# if !@HAVE_DECL_FLOORF@ +_GL_FUNCDECL_SYS (floorf, float, (float x)); +# endif +_GL_CXXALIAS_SYS (floorf, float, (float x)); # endif +_GL_CXXALIASWARN (floorf); #elif defined GNULIB_POSIXCHECK # undef floorf -# define floorf(x) \ - (GL_LINK_WARNING ("floorf is unportable - " \ - "use gnulib module floorf for portability"), \ - floorf (x)) +# if HAVE_RAW_DECL_FLOORF +_GL_WARN_ON_USE (floorf, "floorf is unportable - " + "use gnulib module floorf for portability"); +# endif #endif #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 +# if !@HAVE_DECL_FLOORL@ +_GL_FUNCDECL_SYS (floorl, long double, (long double x)); +# endif +_GL_CXXALIAS_SYS (floorl, long double, (long double x)); # endif +_GL_CXXALIASWARN (floorl); #elif defined GNULIB_POSIXCHECK # undef floorl -# define floorl(x) \ - (GL_LINK_WARNING ("floorl is unportable - " \ - "use gnulib module floorl for portability"), \ - floorl (x)) +# if HAVE_RAW_DECL_FLOORL +_GL_WARN_ON_USE (floorl, "floorl is unportable - " + "use gnulib module floorl for portability"); +# endif #endif @@ -208,175 +307,247 @@ extern long double floorl (long double x); 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); +#if @GNULIB_FREXPL@ && !(@REPLACE_FREXPL@ && !@HAVE_DECL_FREXPL@) +_GL_CXXALIASWARN (frexpl); #endif #if !@GNULIB_FREXPL@ && defined GNULIB_POSIXCHECK # undef frexpl -# define frexpl(x,e) \ - (GL_LINK_WARNING ("frexpl is unportable - " \ - "use gnulib module frexpl for portability"), \ - frexpl (x, e)) +# if HAVE_RAW_DECL_FREXPL +_GL_WARN_ON_USE (frexpl, "frexpl is unportable - " + "use gnulib module frexpl for portability"); +# endif #endif /* 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 -# define ldexpl(x,e) \ - (GL_LINK_WARNING ("ldexpl is unportable - " \ - "use gnulib module ldexpl for portability"), \ - ldexpl (x, e)) +# if HAVE_RAW_DECL_LDEXPL +_GL_WARN_ON_USE (ldexpl, "ldexpl is unportable - " + "use gnulib module ldexpl for portability"); +# endif #endif -#if @GNULIB_MATHL@ || (!@HAVE_DECL_LOGL@ && !defined logl) -# undef logl -extern long double logl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_LOGL@ +# if !@HAVE_LOGL@ || !@HAVE_DECL_LOGL@ +_GL_FUNCDECL_SYS (logl, long double, (long double x)); +# endif +_GL_CXXALIAS_SYS (logl, long double, (long double x)); +_GL_CXXALIASWARN (logl); +#elif defined GNULIB_POSIXCHECK # undef logl -# define logl(x) \ - (GL_LINK_WARNING ("logl is unportable - " \ - "use gnulib module mathl for portability"), \ - logl (x)) +# if HAVE_RAW_DECL_LOGL +_GL_WARN_ON_USE (logl, "logl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif #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 +# if !@HAVE_DECL_ROUNDF@ +_GL_FUNCDECL_SYS (roundf, float, (float x)); +# endif +_GL_CXXALIAS_SYS (roundf, float, (float x)); # endif +_GL_CXXALIASWARN (roundf); #elif defined GNULIB_POSIXCHECK # undef roundf -# define roundf(x) \ - (GL_LINK_WARNING ("roundf is unportable - " \ - "use gnulib module roundf for portability"), \ - roundf (x)) +# if HAVE_RAW_DECL_ROUNDF +_GL_WARN_ON_USE (roundf, "roundf is unportable - " + "use gnulib module roundf for portability"); +# endif #endif #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 +# if !@HAVE_DECL_ROUND@ +_GL_FUNCDECL_SYS (round, double, (double x)); +# endif +_GL_CXXALIAS_SYS (round, double, (double x)); # endif +_GL_CXXALIASWARN (round); #elif defined GNULIB_POSIXCHECK # undef round -# define round(x) \ - (GL_LINK_WARNING ("round is unportable - " \ - "use gnulib module round for portability"), \ - round (x)) +# if HAVE_RAW_DECL_ROUND +_GL_WARN_ON_USE (round, "round is unportable - " + "use gnulib module round for portability"); +# endif #endif #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 +# if !@HAVE_DECL_ROUNDL@ +_GL_FUNCDECL_SYS (roundl, long double, (long double x)); +# endif +_GL_CXXALIAS_SYS (roundl, long double, (long double x)); # endif +_GL_CXXALIASWARN (roundl); #elif defined GNULIB_POSIXCHECK # undef roundl -# define roundl(x) \ - (GL_LINK_WARNING ("roundl is unportable - " \ - "use gnulib module roundl for portability"), \ - roundl (x)) +# if HAVE_RAW_DECL_ROUNDL +_GL_WARN_ON_USE (roundl, "roundl is unportable - " + "use gnulib module roundl for portability"); +# endif #endif -#if @GNULIB_MATHL@ || (!@HAVE_DECL_SINL@ && !defined sinl) -# undef sinl -extern long double sinl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_SINL@ +# if !@HAVE_SINL@ || !@HAVE_DECL_SINL@ +_GL_FUNCDECL_SYS (sinl, long double, (long double x)); +# endif +_GL_CXXALIAS_SYS (sinl, long double, (long double x)); +_GL_CXXALIASWARN (sinl); +#elif defined GNULIB_POSIXCHECK # undef sinl -# define sinl(x) \ - (GL_LINK_WARNING ("sinl is unportable - " \ - "use gnulib module mathl for portability"), \ - sinl (x)) +# if HAVE_RAW_DECL_SINL +_GL_WARN_ON_USE (sinl, "sinl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif -#if @GNULIB_MATHL@ || !@HAVE_DECL_SQRTL@ -extern long double sqrtl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_SQRTL@ +# if !@HAVE_SQRTL@ || !@HAVE_DECL_SQRTL@ +_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 -# define sqrtl(x) \ - (GL_LINK_WARNING ("sqrtl is unportable - " \ - "use gnulib module mathl for portability"), \ - sqrtl (x)) +# if HAVE_RAW_DECL_SQRTL +_GL_WARN_ON_USE (sqrtl, "sqrtl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif -#if @GNULIB_MATHL@ || !@HAVE_DECL_TANL@ -extern long double tanl (long double x); -#endif -#if !@GNULIB_MATHL@ && defined GNULIB_POSIXCHECK +#if @GNULIB_TANL@ +# if !@HAVE_TANL@ || !@HAVE_DECL_TANL@ +_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 -# define tanl(x) \ - (GL_LINK_WARNING ("tanl is unportable - " \ - "use gnulib module mathl for portability"), \ - tanl (x)) +# if HAVE_RAW_DECL_TANL +_GL_WARN_ON_USE (tanl, "tanl is unportable - " + "use gnulib module mathl for portability"); +# endif #endif #if @GNULIB_TRUNCF@ # if !@HAVE_DECL_TRUNCF@ -# define truncf rpl_truncf -extern float truncf (float x); +_GL_FUNCDECL_SYS (truncf, float, (float x)); # endif +_GL_CXXALIAS_SYS (truncf, float, (float x)); +_GL_CXXALIASWARN (truncf); #elif defined GNULIB_POSIXCHECK # undef truncf -# define truncf(x) \ - (GL_LINK_WARNING ("truncf is unportable - " \ - "use gnulib module truncf for portability"), \ - truncf (x)) +# if HAVE_RAW_DECL_TRUNCF +_GL_WARN_ON_USE (truncf, "truncf is unportable - " + "use gnulib module truncf for portability"); +# endif #endif #if @GNULIB_TRUNC@ # if !@HAVE_DECL_TRUNC@ -# define trunc rpl_trunc -extern double trunc (double x); +_GL_FUNCDECL_SYS (trunc, double, (double x)); # endif +_GL_CXXALIAS_SYS (trunc, double, (double x)); +_GL_CXXALIASWARN (trunc); #elif defined GNULIB_POSIXCHECK # undef trunc -# define trunc(x) \ - (GL_LINK_WARNING ("trunc is unportable - " \ - "use gnulib module trunc for portability"), \ - trunc (x)) +# if HAVE_RAW_DECL_TRUNC +_GL_WARN_ON_USE (trunc, "trunc is unportable - " + "use gnulib module trunc for portability"); +# endif #endif #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 +# if !@HAVE_DECL_TRUNCL@ +_GL_FUNCDECL_SYS (truncl, long double, (long double x)); +# endif +_GL_CXXALIAS_SYS (truncl, long double, (long double x)); # endif +_GL_CXXALIASWARN (truncl); #elif defined GNULIB_POSIXCHECK # undef truncl -# define truncl(x) \ - (GL_LINK_WARNING ("truncl is unportable - " \ - "use gnulib module truncl for portability"), \ - truncl (x)) +# if HAVE_RAW_DECL_TRUNCL +_GL_WARN_ON_USE (truncl, "truncl is unportable - " + "use gnulib module truncl for portability"); +# endif #endif #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) : \ @@ -384,15 +555,19 @@ extern int gl_isfinitel (long double x); gl_isfinitef (x)) # endif #elif defined GNULIB_POSIXCHECK - /* How to override a macro? */ +# if defined isfinite +_GL_WARN_REAL_FLOATING_DECL (isfinite); +# undef isfinite +# define isfinite(x) _GL_WARN_REAL_FLOATING_IMPL (isfinite, x) +# endif #endif #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) : \ @@ -400,7 +575,11 @@ extern int gl_isinfl (long double x); gl_isinff (x)) # endif #elif defined GNULIB_POSIXCHECK - /* How to override a macro? */ +# if defined isinf +_GL_WARN_REAL_FLOATING_DECL (isinf); +# undef isinf +# define isinf(x) _GL_WARN_REAL_FLOATING_IMPL (isinf, x) +# endif #endif @@ -409,7 +588,6 @@ extern int gl_isinfl (long double x); # if @HAVE_ISNANF@ /* The original <math.h> included above provides a declaration of isnan macro or (older) isnanf function. */ -# include <math.h> # if __GNUC__ >= 4 /* GCC 4.0 and newer provides three built-ins for isnan. */ # undef isnanf @@ -422,7 +600,7 @@ extern int gl_isinfl (long double x); /* 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 @@ -432,7 +610,6 @@ extern int isnanf (float x); to 'double' numbers earlier but now is a type-generic macro. */ # if @HAVE_ISNAND@ /* The original <math.h> included above provides a declaration of isnan macro. */ -# include <math.h> # if __GNUC__ >= 4 /* GCC 4.0 and newer provides three built-ins for isnan. */ # undef isnand @@ -445,7 +622,7 @@ extern int isnanf (float x); /* 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 @@ -453,7 +630,6 @@ extern int isnand (double x); /* Test for NaN for 'long double' numbers. */ # if @HAVE_ISNANL@ /* The original <math.h> included above provides a declaration of isnan macro or (older) isnanl function. */ -# include <math.h> # if __GNUC__ >= 4 /* GCC 4.0 and newer provides three built-ins for isnan. */ # undef isnanl @@ -466,7 +642,7 @@ extern int isnand (double x); /* 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 @@ -480,19 +656,19 @@ extern int isnanl (long double x); # 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 @@ -502,7 +678,11 @@ extern int rpl_isnanl (long double x); gl_isnan_f (x)) # endif #elif defined GNULIB_POSIXCHECK - /* How to override a macro? */ +# if defined isnan +_GL_WARN_REAL_FLOATING_DECL (isnan); +# undef isnan +# define isnan(x) _GL_WARN_REAL_FLOATING_IMPL (isnan, x) +# endif #endif @@ -517,38 +697,38 @@ extern int rpl_isnanl (long double x); # 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 # define gl_signbitf(arg) \ - ({ union { float _value; \ + ({ union { float _value; \ unsigned int _word[(sizeof (float) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \ - } _m; \ - _m._value = (arg); \ - (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \ + } _m; \ + _m._value = (arg); \ + (_m._word[FLT_SIGNBIT_WORD] >> FLT_SIGNBIT_BIT) & 1; \ }) # endif # if defined DBL_SIGNBIT_WORD && defined DBL_SIGNBIT_BIT && !defined gl_signbitd # define gl_signbitd_OPTIMIZED_MACRO # define gl_signbitd(arg) \ - ({ union { double _value; \ + ({ union { double _value; \ unsigned int _word[(sizeof (double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \ - } _m; \ - _m._value = (arg); \ - (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \ + } _m; \ + _m._value = (arg); \ + (_m._word[DBL_SIGNBIT_WORD] >> DBL_SIGNBIT_BIT) & 1; \ }) # endif # if defined LDBL_SIGNBIT_WORD && defined LDBL_SIGNBIT_BIT && !defined gl_signbitl # define gl_signbitl_OPTIMIZED_MACRO # define gl_signbitl(arg) \ - ({ union { long double _value; \ + ({ union { long double _value; \ unsigned int _word[(sizeof (long double) + sizeof (unsigned int) - 1) / sizeof (unsigned int)]; \ - } _m; \ - _m._value = (arg); \ - (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \ + } _m; \ + _m._value = (arg); \ + (_m._word[LDBL_SIGNBIT_WORD] >> LDBL_SIGNBIT_BIT) & 1; \ }) # endif # endif @@ -558,13 +738,13 @@ extern int gl_signbitl (long double arg); gl_signbitf (x)) # endif #elif defined GNULIB_POSIXCHECK - /* How to override a macro? */ +# if defined signbit +_GL_WARN_REAL_FLOATING_DECL (signbit); +# undef signbit +# define signbit(x) _GL_WARN_REAL_FLOATING_IMPL (signbit, x) +# endif #endif -#ifdef __cplusplus -} -#endif - #endif /* _GL_MATH_H */ #endif /* _GL_MATH_H */ |