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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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