PR_SET_FPEXC(2const)                                      PR_SET_FPEXC(2const)

NAME
       PR_SET_FPEXC - set the floating-point exception mode

LIBRARY
       Standard C library (libc, -lc)

SYNOPSIS
       #include <linux/prctl.h>  /* Definition of PR_* constants */
       #include <sys/prctl.h>

       int prctl(PR_SET_FPEXC, unsigned long mode);

DESCRIPTION
       Set floating-point exception mode to mode, which can be one of the
       following values.

       PR_FP_EXC_SW_ENABLE
              Use FPEXC for FP exception enables.

       PR_FP_EXC_DIV
              Use FPEXC for floating-point divide by zero.

       PR_FP_EXC_OVF
              Use FPEXC for floating-point overflow.

       PR_FP_EXC_UND
              Use FPEXC for floating-point underflow.

       PR_FP_EXC_RES
              Use FPEXC for floating-point inexact result.

       PR_FP_EXC_INV
              Use FPEXC for floating-point invalid operation.

       PR_FP_EXC_DISABLED
              Use FPEXC for FP exceptions disabled.

       PR_FP_EXC_NONRECOV
              Use FPEXC for async nonrecoverable exception mode.

       PR_FP_EXC_ASYNC
              Use FPEXC for async recoverable exception mode.

       PR_FP_EXC_PRECISE
              Use FPEXC for precise exception mode.

RETURN VALUE
       On success, 0 is returned.  On error, -1 is returned, and errno is set
       to indicate the error.

ERRORS
       EINVAL mode is not a valid value.

STANDARDS
       Linux.  PowerPC only.

HISTORY
       Linux 2.4.21, 2.5.32.  (PowerPC)

SEE ALSO
       prctl(2), PR_GET_FPEXC(2const)

Linux man-pages 6.19              2026-02-08              PR_SET_FPEXC(2const)