fegetround(3) - NetBSD Manual Pages

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FEGETROUND(3)           NetBSD Library Functions Manual          FEGETROUND(3)


NAME
fegetround, fesetround -- floating-point rounding control
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <fenv.h> #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; how- ever, the present implementation always succeeds.
SEE ALSO
fenv(3), fpgetround(3), fpsetround(3)
STANDARDS
The fegetround() and fesetround() functions conform to ISO/IEC 9899:1999 (``ISO C99'').
HISTORY
These routines first appeared in FreeBSD 5.3 and NetBSD 6.0. They super- sede the non-standard fpgetround(3) and fpsetround(3) functions. NetBSD 9.99 May 8, 2004 NetBSD 9.99
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