isgreater - Online Linux Manual PageSection : 3
Updated : 2022-12-15
Source : Linux man-pages 6.03
NAMEisgreater, isgreaterequal, isless, islessequal, islessgreater, isunordered − floating-point relational tests without exception for NaN
LIBRARYMath library (libm, −lm)
SYNOPSIS#include <math.h>int isgreater(x, y);
int isgreaterequal(x, y);
int isless(x, y);
int islessequal(x, y);
int islessgreater(x, y);
int isunordered(x, y);Feature Test Macro Requirements for glibc (see feature_test_macros(7)): All functions described here:
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
DESCRIPTIONThe normal relational operations (like <, "less than") fail if one of the operands is NaN. This will cause an exception. To avoid this, C99 defines the macros listed below. 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 not be promoted to real-floating types). isgreater() determines (x) > (y) without an exception if x or y is NaN. isgreaterequal() determines (x) >= (y) without an exception if x or y is NaN. isless() determines (x) < (y) without an exception if x or y is NaN. islessequal() determines (x) <= (y) without an exception if x or y is NaN. islessgreater() determines (x) < (y) || (x) > (y) without an exception if x or y is NaN. This macro is not equivalent to x != y because that expression is true if x or y is NaN. isunordered() determines whether its arguments are unordered, that is, whether at least one of the arguments is a NaN.
RETURN VALUEThe macros other than isunordered() return the result of the relational comparison; these macros return 0 if either argument is a NaN. isunordered() returns 1 if x or y is NaN and 0 otherwise.
ERRORSNo errors occur.
ATTRIBUTESFor an explanation of the terms used in this section, see attributes(7). InterfaceAttributeValue isgreater(), isgreaterequal(), isless(), islessequal(), islessgreater(), isunordered() Thread safetyMT-Safe
STANDARDSPOSIX.1-2001, POSIX.1-2008, C99.
NOTESNot 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.
SEE ALSOfpclassify(3), isnan(3) 0
Johanes Gumabo
Data Size : 12,840 byte
man-isgreater.3Build : 2024-12-05, 20:55 :
Visitor Screen : x
Visitor Counter ( page / site ) : 3 / 202,261
Visitor ID : :
Visitor IP : 18.226.180.253 :
Visitor Provider : AMAZON-02 :
Provider Position ( lat x lon ) : 39.962500 x -83.006100 : x
Provider Accuracy Radius ( km ) : 1000 :
Provider City : Columbus :
Provider Province : Ohio , : ,
Provider Country : United States :
Provider Continent : North America :
Visitor Recorder : Version :
Visitor Recorder : Library :
Online Linux Manual Page : Version : Online Linux Manual Page - Fedora.40 - march=x86-64 - mtune=generic - 24.12.05
Online Linux Manual Page : Library : lib_c - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Online Linux Manual Page : Library : lib_m - 24.10.03 - march=x86-64 - mtune=generic - Fedora.40
Data Base : Version : Online Linux Manual Page Database - 24.04.13 - march=x86-64 - mtune=generic - fedora-38
Data Base : Library : lib_c - 23.02.07 - march=x86-64 - mtune=generic - fedora.36
Very long time ago, I have the best tutor, Wenzel Svojanovsky . If someone knows the email address of Wenzel Svojanovsky , please send an email to johanes_gumabo@yahoo.co.id .
If error, please print screen and send to johanes_gumabo@yahoo.co.id
Under development. Support me via PayPal.