Guardian Native C Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

Guardian Native C Library Calls (f) fegetround(3)
NAME
fegetround - Gets the current floating-point rounding direction
LIBRARY
H-series and J-series native Guardian processes: $SYSTEM.ZDLLnnn.ZCREDLL
32-bit H-series and J-series OSS processes: /G/system/zdllnnn/zcredll
64-bit H-series and J-series OSS processes: /G/system/zdllnnn/ycredll
SYNOPSIS
#include <fenv.h>
int fegetround(void);
PARAMETERS
None.
DESCRIPTION
The fegetround( ) function gets the current floating-point rounding direction.
NOTES
This function is implemented only for the IEEE_float floating-point option. Applications using
this function cannot be compiled if the specified floating-point option is Tandem_float.
RETURN VALUES
The fegetround( ) function returns the value of the rounding direction macro representing the
current floating-point rounding direction. The return value will match one of the following mac-
ros, which are defined in the fenv.h header file:
FE_TONEAREST
Round to nearest.
FE_UPWARD Round upwards (towards positive infinity).
FE_DOWNWARD
Round downwards (towards negative infinity).
FE_TOWARDZERO
Round toward zero.
If the current rounding direction is not determined, fegetround( ) returns a negative value.
RELATED INFORMATION
Functions: fesetround(3).
STANDARDS CONFORMANCE
This function conforms to the ISO/IEC 9899:1999 standard.
This function conforms to the IEEE Std 1003.1, 2004 Edition.
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