values.h

Purpose

     Defines machine-dependent values.

Synopsis

     #include <values.h>

Description

     This  header file  contains a  set of  manifest constants
     that are  conditionally defined for  particular processor
     architectures.  The model for integers is assumed to be a
     ones- or twos-complement  binary representation, in which
     the sign  is represented by  the value of  the high-order
     bit.

     BITS(type)     The number  of bits in the  specified data
                    type

     HIBITS         A short  integer with only  the high-order
                    bit set (0x8000)

     HIBITL         A  long integer  with only  the high-order
                    bit set (0x80000000)

     HIBITI         A regular integer with only the high-order
                    bit set (the same as HIBITL)

     MAXSHORT       The  maximum  value   of  a  signed  short
                    integer (0x7FFF == 32767)

     MAXLONG        The maximum value of a signed long integer
                    (0x7FFFFFFF == 2147483647)

     MAXINT         The  maximum  value  of a  signed  regular
                    integer (the same as MAXLONG)

     MAXFLOAT       The  maximum value  of a  single-precision
                    floating-point number

     MAXDOUBLE      The  maximum value  of a  double-precision
                    floating-point number

     LN_MAXDOUBLE   The natural logarithm of MAXDOUBLE

     MINFLOAT       The  minimum positive  value of  a single-
                    precision floating-point number

     MINDOUBLE      The  minimum positive  value of  a double-
                    precision floating-point number

     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

     FMAXEXP        The maximum exponent of a single-precision
                    floating-point number

     DMAXEXP        The maximum exponent of a double-precision
                    floating-point number

     FMINEXP        The minimum exponent of a single-precision
                    floating-point number

     DMINEXP        The minimum exponent of a double-precision
                    floating-point number

     FMAXPOWTWO     The  largest  power  of two  that  can  be
                    exactly represented  as a single-precision
                    floating-point number

     DMAXPOWTWO     The  largest  power  of two  that  can  be
                    exactly represented  as a double-precision
                    floating-point number.

File

     /usr/include/values.h

Related Information

     In this book:  "math.h,"  "types.h."