signbit man page on Darwin

signbit man page on Darwin

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SIGNBIT(3)		 BSD Library Functions Manual		    SIGNBIT(3)

NAME
     signbit — determine whether a floating-point number's sign is negative

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <math.h>

     int
     signbit(real-floating x);

DESCRIPTION
     The signbit() macro takes an argument of x.  It returns non-zero if the
     value of the argument's sign is negative, otherwise 0.

SEE ALSO
     fpclassify(3), math(3)

STANDARDS
     The signbit() macro conforms to ISO/IEC 9899:1999 (“ISO C99”).

BSD			       February 11, 2003			   BSD

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