Manual Pages for UNIX Operating System command usage for man fpclassify

Mathematical Library Functions                     fpclassify(3M)



NAME
     fpclassify - classify real floating type

SYNOPSIS
     c99 [ flag... ] file... -lm [ library... ]
     #include 

     int fpclassify(real-floating x);


DESCRIPTION
     The fpclassify() macro classifies its argument value as NaN,
     infinite,  normal,  subnormal,  or  zero. First, an argument
     represented in a format wider than its semantic type is con-
     verted to its semantic type. Then classification is based on
     the type of the argument.

RETURN VALUES
     The fpclassify() macro returns the value of the number clas-
     sification macro appropriate to the value of its argument.

ERRORS
     No errors are defined.

ATTRIBUTES
     See attributes(5) for descriptions of the  following  attri-
     butes:



     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | MT-Safe                     |
    |_____________________________|_____________________________|
    | Standard                    | See standards(5).           |
    |_____________________________|_____________________________|


SEE ALSO
     isfinite(3M),    isinf(3M),     isnan(3M),     isnormal(3M),
     math.h(3HEAD), signbit(3M), attributes(5), standards(5)











SunOS 5.11          Last change: 12 Jul 2006                    1