PR_SET_FPEXC(2const)

PR_SET_FPEXC2const

Set the floating-point exception mode

Usage

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

int prctl(PR_SET_FPEXC, unsigned long mode);

Library

Standard C library (libc, -lc)

Overview

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.

Releases

2 releases since Debian 13 (Trixie); the text changed 1 time.

  1. 13
  2. Arch

Standards

Linux. PowerPC only.

History

Linux 2.4.21, 2.5.32. (PowerPC)

From man-pages 6.19-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.