fex_merge_flags(3M) Mathematical Library Functions fex_merge_flags(3M)NAMEfex_merge_flags - manage the floating point environment
SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include <fenv.h>
void fex_merge_flags(const fenv_t *envp);
DESCRIPTION
The fex_merge_flags() function copies into the current environment
those exception flags that are set in the environment represented by
the object pointed to by envp. The argument envp must point to an
object set by a call to feholdexcept(3M) or fegetenv(3M) or equal to
the macro FE_DFL_ENV. The fex_merge_flags() function does not raise
any exceptions, but only sets its flags.
RETURN VALUES
The fex_merge_flags function does not return a value.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────────────────────────────────────────────┐
│ATTRIBUTE TYPE ATTRIBUTE VALUE │
│Availability system/library/math, SUNWlmsx │
│Interface Stability Committed │
│MT-Level MT-Safe │
└────────────────────────────────────────────────────────────┘
SEE ALSOfeclearexcept(3M), fegetenv(3M), fesetround(3M), fesetprec(3M),
fex_set_handling(3M), fex_set_log(3M), attributes(5)
Numerical Computation Guide
NOTES
In a multithreaded program, the fex_merge_flags() function affects the
floating point environment only for the calling thread.
The fex_merge_flags() function automatically installs and deinstalls
SIGFPE handlers and sets and clears the trap enable mode bits in the
floating point status register as needed. If a program uses these
functions and attempts to install a SIGFPE handler or control the trap
enable mode bits independently, the resulting behavior is not defined.
SunOS 5.11 12 Jul 2006 fex_merge_flags(3M)