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    發布日期: 2023-07-08
  • 語言: 其他
  • 標簽: graphviz??

資源簡介

graphviz-2.24.0.tar.gz

資源截圖

代碼片段和文件信息

/*?$Id:?dot.cv?1.48?2009/06/15?16:05:00?erg?Exp?$?$Revision:?1.48?$?*/
/*?vim:set?shiftwidth=4?ts=8:?*/

/**********************************************************
*??????This?software?is?part?of?the?graphviz?package??????*
*????????????????http://www.graphviz.org/?????????????????*
*?????????????????????????????????????????????????????????*
*????????????Copyright?(c)?1994-2004?AT&T?Corp.???????????*
*????????????????and?is?licensed?under?the????????????????*
*????????????Common?Public?License?Version?1.0???????????*
*??????????????????????by?AT&T?Corp.??????????????????????*
*?????????????????????????????????????????????????????????*
*????????Information?and?Software?Systems?Research????????*
*??????????????AT&T?Research?Florham?Park?NJ?????????????*
**********************************************************/

/*
?*?Written?by?Stephen?North?and?Eleftherios?Koutsofios.
?*/

#ifdef?HAVE_CONFIG_H
#include?“config.h“
#endif

#include?“gvc.h“
#include?“gvio.h“

#ifndef?WIN32_DLL
#ifdef?GVDLL
__declspec(dllimport)?boolean?MemTest;
#else
#include?“globals.h“
#endif
#endif

#ifdef?WIN32_DLL
__declspec(dllimport)?boolean?MemTest;
#endif

#include?
#ifdef?HAVE_UNISTD_H
#include?
#endif

#if?defined(HAVE_FENV_H)?&&?defined(HAVE_FEENABLEEXCEPT)
/*?_GNU_SOURCE?is?needed?for?feenableexcept?to?be?defined?in?fenv.h?on?GNU
?*?systems.???Presumably?it?will?do?no?harm?on?other?systems.?*/
#ifndef?_GNU_SOURCE
#define?_GNU_SOURCE
#endif
#?include?
#elif?HAVE_FPU_CONTROL_H
#?include?
#elif?HAVE_SYS_FPU_H
#?include?
#endif

static?GVC_t?*Gvc;
static?graph_t?*?G;

#ifndef?WIN32
static?void?intr(int?s)
{
????if?(G)
gvRenderJobs(Gvc?G);
????exit?(gvFreeContext(Gvc));
}

#ifndef?NO_FPERR
static?void?fperr(int?s)
{
????fprintf(stderr?“caught?SIGFPE?%d\n“?s);
????/*?signal?(s?SIG_DFL);?raise?(s);?*/
????exit(1);
}

static?void?fpinit(void)
{
#if?defined(HAVE_FENV_H)?&&?defined(HAVE_FEENABLEEXCEPT)
????int?exc?=?0;
#?ifdef?FE_DIVBYZERO
????exc?|=?FE_DIVBYZERO;
#?endif
#?ifdef?FE_OVERFLOW
????exc?|=?FE_OVERFLOW;
#?endif
#?ifdef?FE_INVALID
????exc?|=?FE_INVALID;
#?endif
????feenableexcept(exc);

#ifdef?HAVE_FESETENV
#ifdef?FE_NONIEEE_ENV
????fesetenv?(FE_NONIEEE_ENV);
#endif
#endif

#elif??HAVE_FPU_CONTROL_H
????/*?On?s390-ibm-linux?the?header?exists?but?the?definitions
?????*?of?the?masks?do?not.??I?assume?this?is?temporary?but?until
?????*?there‘s?a?real?implementation?it‘s?probably?safest?to?not
?????*?adjust?the?FPU?on?this?platform.
?????*/
#?if?defined(_FPU_MASK_IM)?&&?defined(_FPU_MASK_DM)?&&?defined(_FPU_MASK_ZM)?&&?defined(_FPU_GETCW)
????fpu_control_t?fpe_flags?=?0;
????_FPU_GETCW(fpe_flags);
????fpe_flags?&=?~_FPU_MASK_IM; /*?invalid?operation?*/
????fpe_flags?&=?~_FPU_MASK_DM; /*?denormalized?operand?*/
????fpe_flags?&=?~_FPU_MASK_ZM; /*?zero-divide?*/
????/*fpe_flags?&=?~_FPU_MASK_OM;????????overflow?*/
????/*fpe_flags?&=?~_FPU_MASK_UM;????????underflow?*/
????/*fpe_flags?&=?~_FPU_MASK_PM;????????pre

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