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<A NAME="PetscSetFPTrap"><H1>PetscSetFPTrap</H1></A>
Enables traps/exceptions on common floating point errors. This option may not work on certain machines.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petsc.h"
int PetscSetFPTrap(PetscFPTrap flag)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<DT><B>flag </B> -PETSC_FP_TRAP_ON, PETSC_FP_TRAP_OFF.
<br>
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<DT><B>-fp_trap </B> -Activates floating point trapping
<br>
<P>
<P>
<H3><FONT COLOR="#CC3333">Description</FONT></H3>
On systems that support it, this routine causes floating point
overflow, divide-by-zero, and invalid-operand (e.g., a NaN) to
cause a message to be printed and the program to exit.
<P>
<H3><FONT COLOR="#CC3333">Caution</FONT></H3>
On certain machines, in particular the IBM rs6000, floating point
trapping is VERY slow!
<P>
<P>
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/sys/src/error/fp.c.html#PetscSetFPTrap">src/sys/src/error/fp.c</A>
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