VALUES(M)                                  UNIX System V



     Name
          values - machine-dependent values


     Syntax
          #include <values.h>


     Description
          This  file   contains   a   set   of   manifest   constants,
          conditionally     defined     for    particular    processor
          architectures.

          The model assumed  for  integers  is  binary  representation
          (one's  or  two's complement), where the sign is represented
          by the value of the high-order bit.

          BITS(type)          The number of bits in a  specified  type
                              (e.g., int).

          HIBITS              The value of a short integer  with  only
                              the   high-order   bit   set   (in  most
                              implementations, 0x8000).

          HIBITL              The value of a long  integer  with  only
                              the   high-order   bit   set   (in  most
                              implementations, 0x80000000).

          HIBITI              The value of a regular integer with only
                              the high-order bit set (usually the same
                              as HIBITS or HIBITL).

          MAXSHORT            The maximum  value  of  a  signed  short
                              integer (in most implementations, 0x7FFF
                              = 32767).

          MAXLONG             The  maximum  value  of  a  signed  long
                              integer    (in   most   implementations,
                              0x7FFFFFFF = 2147483647).

          MAXINT              The maximum value of  a  signed  regular
                              integer (usually the same as MAXSHORT or
                              MAXLONG).

          MAXFLOAT, LN_MAXFLOAT         The   maximum   value   of   a
                                        single-precision     floating-
                                        point number, and its  natural
                                        logarithm.

          MAXDOUBLE, LN_MAXDOUBLE       The   maximum   value   of   a
                                        double-precision     floating-
                                        point number, and its  natural
                                        logarithm.

          MINFLOAT, LN_MINFLOAT         The minimum positive value  of
                                        a  single-precision  floating-
                                        point number, and its  natural
                                        logarithm.

          MINDOUBLE, LN_MINDOUBLE       The minimum positive value  of
                                        a  double-precision  floating-
                                        point number, and its  natural
                                        logarithm.

          FSIGNIF             The number of significant  bits  in  the
                              mantissa     of    a    single-precision
                              floating-point number.

          DSIGNIF             The number of significant  bits  in  the
                              mantissa     of    a    double-precision
                              floating-point number.


     See Also
          intro(S), limits(F), math(M)


     Standards Conformance
          values is conformant with:

          The X/Open Portability Guide II of January 1987.


     (printed 8/23/89)                                  VALUES(M)