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Man Pages


Manual Reference Pages  -  FESETROUND (3)

NAME

fegetround, fesetround - floating-point rounding control

CONTENTS

Library
Synopsis
Description
Return Values
See Also
Standards
History

LIBRARY


.Lb libm

SYNOPSIS


.In fenv.h
.Fd #pragma STDC FENV_ACCESS ON int fegetround void int fesetround int round

DESCRIPTION

The fegetround function determines the current floating-point rounding mode, and the fesetround function sets the current rounding mode to round. The rounding mode is one of FE_TONEAREST, FE_DOWNWARD, FE_UPWARD, or FE_TOWARDZERO, as described in fenv(3).

RETURN VALUES

The fegetround routine returns the current rounding mode. The fesetround function returns 0 on success and non-zero otherwise; however, the present implementation always succeeds.

SEE ALSO

fenv(3), fpgetround(3), fpsetround(3)

STANDARDS

The fegetround and fesetround functions conform to -isoC-99.

HISTORY

These routines first appeared in
.Fx 5.3 . They supersede the non-standard fpgetround(3) and fpsetround(3) functions.
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