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- strio.h trio.c: Dan McNichol suggested a couple of small

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fixes for AIX 4.3.3 using Visual Age 5.0.2 compiler
Daniel
This commit is contained in:
Daniel Veillard
2001-04-30 17:44:45 +00:00
parent 02141eabb2
commit 5792e16f05
5 changed files with 47 additions and 22 deletions
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54
xpath.c
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@ -39,9 +39,8 @@
#ifdef HAVE_CTYPE_H
#include <ctype.h>
#endif
#if defined(__osf__) && defined(__GNUC__)
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#define FPE_WORKAROUND
#endif
#include <libxml/xmlmemory.h>
@ -65,6 +64,7 @@
void xmlXPathStringFunction(xmlXPathParserContextPtr ctxt, int nargs);
double xmlXPathStringEvalNumber(const xmlChar *str);
double xmlXPathDivideBy(double f, double fzero);
/************************************************************************
* *
@ -150,6 +150,37 @@ int isinf(double x)
#endif /* ! HAVE_iSNAN */
#endif /* ! defined(isnan) */
/**
* xmlXPathDivideBy:
*
* The best way found so far to generate the NAN, +-INF
* without hitting a compiler bug or optimization :-\
*
* Returns the double resulting from the division
*/
double
xmlXPathDivideBy(double f, double fzero) {
float ret;
#ifdef HAVE_SIGNAL
#ifdef SIGFPE
#ifdef SIG_IGN
void (*sighandler)(int);
sighandler = signal(SIGFPE, SIG_IGN);
#endif
#endif
#endif
ret = f / fzero;
#ifdef HAVE_SIGNAL
#ifdef SIGFPE
#ifdef SIG_IGN
signal(SIGFPE, sighandler);
#endif
#endif
#endif
return(ret);
}
/**
* xmlXPathInit:
*
@ -161,22 +192,9 @@ xmlXPathInit(void) {
if (initialized) return;
#ifdef FPE_WORKAROUND
signal(SIGFPE, SIG_IGN);
#endif
#ifdef XPATH_USE_DIVISION_SHORTCUTS
xmlXPathNAN = 0;
xmlXPathNAN /= 0.0;
xmlXPathPINF = 1;
xmlXPathPINF /= 0.0;
xmlXPathNINF = -1;
xmlXPathNINF /= 0.0;
#else
xmlXPathNAN = 0.0 / 0.0;
xmlXPathPINF = 1 / 0.0;
xmlXPathNINF = -1 / 0.0;
#endif
xmlXPathNAN = xmlXPathDivideBy(0.0, 0.0);
xmlXPathPINF = xmlXPathDivideBy(1.0, 0.0);
xmlXPathPINF = xmlXPathDivideBy(-1.0, 0.0);
initialized = 1;
}