PR_SET_FPEXC(2const) — Linux manual page

PR_SET_FPEXC(2const)                                 PR_SET_FPEXC(2const)

NAME         top

       PR_SET_FPEXC - set the floating-point exception mode

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

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

       int prctl(PR_SET_FPEXC, unsigned long mode);

DESCRIPTION         top

       Set floating-point exception mode to mode.  mode 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         top

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

ERRORS         top

       EINVAL mode is not a valid value.

STANDARDS         top

       Linux.  PowerPC only.

HISTORY         top

       Linux 2.4.21, 2.5.32.  (PowerPC)

SEE ALSO         top

       prctl(2), PR_GET_FPEXC(2const)

COLOPHON         top

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Linux man-pages 6.16            2025-08-24           PR_SET_FPEXC(2const)

Pages that refer to this page: prctl(2),  PR_GET_FPEXC(2const)

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