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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/isgreater.3 | |
parent | Adding debian version 6.7-2. (diff) | |
download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/isgreater.3')
-rw-r--r-- | man3/isgreater.3 | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/man3/isgreater.3 b/man3/isgreater.3 deleted file mode 100644 index e097523..0000000 --- a/man3/isgreater.3 +++ /dev/null @@ -1,144 +0,0 @@ -'\" t -.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) -.\" -.\" SPDX-License-Identifier: GPL-1.0-or-later -.\" -.\" 2002-07-27 Walter Harms -.\" this was done with the help of the glibc manual -.\" -.TH isgreater 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -isgreater, isgreaterequal, isless, islessequal, islessgreater, -isunordered \- floating-point relational tests without exception for NaN -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B #include <math.h> -.P -.BI "int isgreater(" x ", " y ); -.BI "int isgreaterequal(" x ", " y ); -.BI "int isless(" x ", " y ); -.BI "int islessequal(" x ", " y ); -.BI "int islessgreater(" x ", " y ); -.BI "int isunordered(" x ", " y ); -.fi -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.nf - All functions described here: - _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L -.fi -.SH DESCRIPTION -The normal relational operations (like -.BR < , -"less than") -fail if one of the operands is NaN. -This will cause an exception. -To avoid this, C99 defines the macros listed below. -.P -These macros are guaranteed to evaluate their arguments only once. -The arguments must be of real floating-point type (note: do not pass -integer values as arguments to these macros, since the arguments will -.I not -be promoted to real-floating types). -.TP -.BR isgreater () -determines \fI(x)\ >\ (y)\fP without an exception -if -.I x -or -.I y -is NaN. -.TP -.BR isgreaterequal () -determines \fI(x)\ >=\ (y)\fP without an exception -if -.I x -or -.I y -is NaN. -.TP -.BR isless () -determines \fI(x)\ <\ (y)\fP without an exception -if -.I x -or -.I y -is NaN. -.TP -.BR islessequal () -determines \fI(x)\ <=\ (y)\fP without an exception -if -.I x -or -.I y -is NaN. -.TP -.BR islessgreater () -determines \fI(x)\ < (y) || (x) >\ (y)\fP -without an exception if -.I x -or -.I y -is NaN. -This macro is not equivalent to \fIx\ !=\ y\fP because that expression is -true if -.I x -or -.I y -is NaN. -.TP -.BR isunordered () -determines whether its arguments are unordered, that is, whether -at least one of the arguments is a NaN. -.SH RETURN VALUE -The macros other than -.BR isunordered () -return the result of the relational comparison; -these macros return 0 if either argument is a NaN. -.P -.BR isunordered () -returns 1 if -.I x -or -.I y -is NaN and 0 otherwise. -.SH ERRORS -No errors occur. -.SH ATTRIBUTES -For an explanation of the terms used in this section, see -.BR attributes (7). -.TS -allbox; -lbx lb lb -l l l. -Interface Attribute Value -T{ -.na -.nh -.BR isgreater (), -.BR isgreaterequal (), -.BR isless (), -.BR islessequal (), -.BR islessgreater (), -.BR isunordered () -T} Thread safety MT-Safe -.TE -.SH VERSIONS -Not all hardware supports these functions, -and where hardware support isn't provided, they will be emulated by macros. -This will result in a performance penalty. -Don't use these functions if NaN is of no concern for you. -.SH STANDARDS -C11, POSIX.1-2008. -.SH HISTORY -POSIX.1-2001, C99. -.SH SEE ALSO -.BR fpclassify (3), -.BR isnan (3) |