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

NAME

signbit - "determine whether a floating-point number’s sign is negative"

CONTENTS

Library
Synopsis
Description
See Also
Standards
History

LIBRARY


.Lb libm

SYNOPSIS


.In math.h int signbit "real-floating x"

DESCRIPTION

The signbit macro takes an argument of x and returns non-zero if the value of its sign is negative, otherwise 0.

SEE ALSO

fpclassify(3), math(3)

STANDARDS

HISTORY


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