isnanf(3)                           CLIX                           isnanf(3)



  NAME

    isnanf - Tests for floating-point NaN (Not-A-Number)

  LIBRARY

    None.

  SYNOPSIS

    #include <ieeefp.h>

    int isnanf(
      float fsrc );

  PARAMETERS

    fsrc   An argument of type float

  DESCRIPTION

    The isnanf() macro returns true (1) if the argument fsrc is a NaN;
    otherwise it return false (0).

    Neither macro generates any exception, even for signaling NaNs.

    The isnanf() macro implemented as a in <ieeefp.h>.

  RELATED INFORMATION

    Functions: fpgetround(3)























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