diff options
Diffstat (limited to 'Build/source/utils/asymptote/rounding.h')
-rw-r--r-- | Build/source/utils/asymptote/rounding.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/Build/source/utils/asymptote/rounding.h b/Build/source/utils/asymptote/rounding.h new file mode 100644 index 00000000000..a0efe31dc4d --- /dev/null +++ b/Build/source/utils/asymptote/rounding.h @@ -0,0 +1,87 @@ +/* GTS - Library for the manipulation of triangulated surfaces + * Copyright (C) 1999 Stéphane Popinet + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#ifdef HAVE_FPU_CONTROL_H +# include <fpu_control.h> +# ifdef _FPU_EXTENDED +# if !defined(__alpha__) || !defined(__GLIBC__) +# if defined(__arm__) + static fpu_control_t fpu_round_double = _FPU_DEFAULT; +# else + static fpu_control_t fpu_round_double = + (_FPU_DEFAULT & ~ _FPU_EXTENDED)|_FPU_DOUBLE; +# endif + static fpu_control_t fpu_init; +# define FPU_ROUND_DOUBLE { _FPU_GETCW(fpu_init);\ + _FPU_SETCW(fpu_round_double); } +# define FPU_RESTORE {_FPU_SETCW(fpu_init);} +# else /* __alpha__ && __GLIBC__ */ +# define FPU_ROUND_DOUBLE +# define FPU_RESTORE +# endif /* __alpha__ && __GLIBC__ */ +# else /* not FPU_EXTENDED */ +# define FPU_ROUND_DOUBLE +# define FPU_RESTORE +# endif /* not FPU_EXTENDED */ +#else /* not HAVE_FPU_CONTROL_H */ +# ifdef __FreeBSD__ +# include <floatingpoint.h> +# define FPU_ROUND_DOUBLE (fpsetprec(FP_PD)) +# define FPU_RESTORE (fpsetprec(FP_PE)) +# else /* not __FreeBSD__ */ +# ifdef WIN32 +# ifdef _MSC_VER +# include <float.h> + static unsigned int fpu_init; +# define FPU_ROUND_DOUBLE (fpu_init = _controlfp (0, 0),\ + _controlfp (_PC_53, MCW_PC)) +# define FPU_RESTORE (_controlfp (fpu_init, 0xfffff)) +# elif __MINGW32__ +# include <float.h> + static unsigned int fpu_init; +# define FPU_ROUND_DOUBLE (fpu_init = _controlfp (0, 0),\ + _controlfp (_PC_53, _MCW_PC)) +# define FPU_RESTORE (_controlfp (fpu_init, 0xfffff)) +# else /* not _MSC_VER or __MINGW32__ */ +# error "You need MSVC or MinGW for the Win32 version" +# endif /* not _MSC_VER or __MINGW32__ */ +# else /* not WIN32 */ +# ifdef __CYGWIN__ + typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__HI__))); + static fpu_control_t fpu_round_double = 0x027f; + static fpu_control_t fpu_init; +# define _FPU_GETCW(cw) __asm__ ("fnstcw %0" : "=m" (*&cw)) +# define _FPU_SETCW(cw) __asm__ ("fldcw %0" : : "m" (*&cw)) +# define FPU_ROUND_DOUBLE { _FPU_GETCW(fpu_init);\ + _FPU_SETCW(fpu_round_double); } +# define FPU_RESTORE { _FPU_SETCW(fpu_init);} +# else /* not __CYGWIN__ */ +# ifdef CPP_HAS_WARNING +# warning "Unknown CPU: assuming default double precision rounding" +# endif /* CPP_HAS_WARNING */ +# define FPU_ROUND_DOUBLE +# define FPU_RESTORE +# endif /* not __CYGWIN__ */ +# endif /* not WIN32 */ +# endif /* not __FreeBSD__ */ +#endif /* not HAVE_FPU_CONTROL_H */ |