Open System Services Library Calls Reference Manual (G06.29+, H06.08+, J06.03+)

OSS Library Calls (e - f) fesetenv(3)
NAME
fesetenv - Sets the floating-point environment
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 fesetenv(
const fenv_t *envp);
PARAMETERS
envp Points to an object set by a call to fegetenv( ) or feholdexcept(), or equals the
macro FE_DFL_ENV.
DESCRIPTION
The fesetenv( ) function establishes the floating-point environment represented by the object
pointed to by the parameter envp.
Note that the fesetenv( ) function merely installs the state of the floating-point status flags
represented through its parameter; the fesetenv( ) function does not raise these floating-point
exceptions (that is, no traps will be taken).
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 fesetenv( ) function always returns 0 (zero), indicating that the environment was success-
fully established.
RELATED INFORMATION
Functions: fegetenv(3), feholdexcept(3), feupdateenv(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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