diff options
Diffstat (limited to 'lib/xtime.h')
| -rw-r--r-- | lib/xtime.h | 65 |
1 files changed, 40 insertions, 25 deletions
diff --git a/lib/xtime.h b/lib/xtime.h index d268d2d..084a32c 100644 --- a/lib/xtime.h +++ b/lib/xtime.h @@ -1,11 +1,11 @@ /* xtime -- extended-resolution integer time stamps - Copyright (C) 2005, 2006 Free Software Foundation, Inc. + Copyright (C) 2005-2006, 2009-2016 Free Software Foundation, Inc. - This program is free software; you can redistribute it and/or modify + This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of @@ -13,34 +13,45 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software Foundation, - Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* Written by Paul Eggert. */ #ifndef XTIME_H_ -# define XTIME_H_ 1 +#define XTIME_H_ 1 + +#ifndef _GL_INLINE_HEADER_BEGIN + #error "Please include config.h first." +#endif +_GL_INLINE_HEADER_BEGIN +#ifndef XTIME_INLINE +# define XTIME_INLINE _GL_INLINE +#endif /* xtime_t is a signed type used for time stamps. It is an integer type that is a count of nanoseconds -- except for obsolescent hosts without sufficiently-wide integers, where it is a count of seconds. */ -# if HAVE_LONG_LONG_INT +#if HAVE_LONG_LONG_INT typedef long long int xtime_t; -# define XTIME_PRECISION 1000000000 -# else -# include <limits.h> +# define XTIME_PRECISION 1000000000 +#else +# include <limits.h> typedef long int xtime_t; -# if LONG_MAX >> 31 >> 31 == 0 -# define XTIME_PRECISION 1 -# else -# define XTIME_PRECISION 1000000000 -# endif +# if LONG_MAX >> 31 >> 31 == 0 +# define XTIME_PRECISION 1 +# else +# define XTIME_PRECISION 1000000000 # endif +#endif + +#ifdef __cplusplus +extern "C" { +#endif /* Return an extended time value that contains S seconds and NS nanoseconds, without any overflow checking. */ -static inline xtime_t +XTIME_INLINE xtime_t xtime_make (xtime_t s, long int ns) { if (XTIME_PRECISION == 1) @@ -50,32 +61,32 @@ xtime_make (xtime_t s, long int ns) } /* Return the number of seconds in T, which must be nonnegative. */ -static inline xtime_t +XTIME_INLINE xtime_t xtime_nonnegative_sec (xtime_t t) { return t / XTIME_PRECISION; } /* Return the number of seconds in T. */ -static inline xtime_t +XTIME_INLINE xtime_t xtime_sec (xtime_t t) { return (XTIME_PRECISION == 1 - ? t - : t < 0 - ? (t + XTIME_PRECISION - 1) / XTIME_PRECISION - 1 - : xtime_nonnegative_sec (t)); + ? t + : t < 0 + ? (t + XTIME_PRECISION - 1) / XTIME_PRECISION - 1 + : xtime_nonnegative_sec (t)); } /* Return the number of nanoseconds in T, which must be nonnegative. */ -static inline long int +XTIME_INLINE long int xtime_nonnegative_nsec (xtime_t t) { return t % XTIME_PRECISION; } /* Return the number of nanoseconds in T. */ -static inline long int +XTIME_INLINE long int xtime_nsec (xtime_t t) { long int ns = t % XTIME_PRECISION; @@ -84,4 +95,8 @@ xtime_nsec (xtime_t t) return ns; } +#ifdef __cplusplus +} +#endif + #endif |