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ISGREATER (3) | C library functions | Unix Manual Pages | :man

NAME

isgreater, isgreaterequal, isless, islessequal, islessgreater, isunordered - "compare two floating-point numbers"

CONTENTS

Library
Synopsis
Description
See Also
Standards
History

LIBRARY


.Lb libc

SYNOPSIS


.In math.h int isgreater "real-floating x" "real-floating y" int isgreaterequal "real-floating x" "real-floating y" int isless "real-floating x" "real-floating y" int islessequal "real-floating x" "real-floating y" int islessgreater "real-floating x" "real-floating y" int isunordered "real-floating x" "real-floating y"

DESCRIPTION

Each of the macros isgreater, isgreaterequal, isless, islessequal, and islessgreater take arguments x and y and return a non-zero value if and only if its nominal relation on x and y is true. These macros always return zero if either argument is not a number (NaN), but unlike the corresponding C operators, they never raise a floating point exception.

The isunordered macro takes arguments x and y and returns non-zero if and only if neither x nor y are NaNs. For any pair of floating-point values, one of the relationships (less, greater, equal, unordered) holds.

SEE ALSO

fpclassify(3), math(3), signbit(3)

STANDARDS

HISTORY


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