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diff --git a/man-pages-posix-2013/man3p/fegetround.3p b/man-pages-posix-2013/man3p/fegetround.3p new file mode 100644 index 0000000..f3ba4a5 --- /dev/null +++ b/man-pages-posix-2013/man3p/fegetround.3p @@ -0,0 +1,103 @@ +'\" et +.TH FEGETROUND "3P" 2013 "IEEE/The Open Group" "POSIX Programmer's Manual" +.SH PROLOG +This manual page is part of the POSIX Programmer's Manual. +The Linux implementation of this interface may differ (consult +the corresponding Linux manual page for details of Linux behavior), +or the interface may not be implemented on Linux. + +.SH NAME +fegetround, +fesetround +\(em get and set current rounding direction +.SH SYNOPSIS +.LP +.nf +#include <fenv.h> +.P +int fegetround(void); +int fesetround(int \fIround\fP); +.fi +.SH DESCRIPTION +The functionality described on this reference page is aligned with the +ISO\ C standard. Any conflict between the requirements described here and the +ISO\ C standard is unintentional. This volume of POSIX.1\(hy2008 defers to the ISO\ C standard. +.P +The +\fIfegetround\fR() +function shall get the current rounding direction. +.P +The +\fIfesetround\fR() +function shall establish the rounding direction represented by its +argument +.IR round . +If the argument is not equal to the value of a rounding direction +macro, the rounding direction is not changed. +.SH "RETURN VALUE" +The +\fIfegetround\fR() +function shall return the value of the rounding direction macro +representing the current rounding direction or a negative value if +there is no such rounding direction macro or the current rounding +direction is not determinable. +.P +The +\fIfesetround\fR() +function shall return a zero value if and only if the requested +rounding direction was established. +.SH ERRORS +No errors are defined. +.LP +.IR "The following sections are informative." +.SH EXAMPLES +The following example saves, sets, and restores the rounding direction, +reporting an error and aborting if setting the rounding direction +fails: +.sp +.RS 4 +.nf +\fB +#include <fenv.h> +#include <assert.h> +void f(int round_dir) +{ + #pragma STDC FENV_ACCESS ON + int save_round; + int setround_ok; + save_round = fegetround(); + setround_ok = fesetround(round_dir); + assert(setround_ok == 0); + /* ... */ + fesetround(save_round); + /* ... */ +} +.fi \fR +.P +.RE +.SH "APPLICATION USAGE" +None. +.SH RATIONALE +None. +.SH "FUTURE DIRECTIONS" +None. +.SH "SEE ALSO" +The Base Definitions volume of POSIX.1\(hy2008, +.IR "\fB<fenv.h>\fP" +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 7, Copyright (C) 2013 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. +(This is POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the +event of any discrepancy between this version and the original IEEE and +The Open Group Standard, the original IEEE and The Open Group Standard +is the referee document. The original Standard can be obtained online at +http://www.unix.org/online.html . + +Any typographical or formatting errors that appear +in this page are most likely +to have been introduced during the conversion of the source files to +man page format. To report such errors, see +https://www.kernel.org/doc/man-pages/reporting_bugs.html . |