values(5)                                                         values(5)

NAME
     values - machine-dependent values

SYNOPSIS
     #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.

     HIBITL       The value of a long integer with only the high-order bit
                  set.

     HIBITI       The value of an integer with only the high-order bit set.

     MAXSHORT     The maximum value of a signed short integer.

     MAXLONG      The maximum value of a signed long integer.

     MAXINT       The maximum value of a signed integer.

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

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

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

     MINDOUBLE, LNMINDOUBLE
                  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.




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values(5)                                                         values(5)

     BITSPERBYTE  The number of bits in a byte

     EXPBASE     The base of the exponent

     DMAXEXP      The maximum exponent of a double value

     FMAXEXP      The maximum exponent of a float value

     DMINEXP      The minimum exponent of a double value

     FMINEXP      The minimum exponent of a float value

     DMAXPOWTWO   The maximum power of two representable exactly as double

     FMAXPOWTWO   The maximum power of two representable exactly as float

     IEEE        1, when IEEE standard representation is used

     DEXPLEN     The number of bits for the exponent of a double

     FEXPLEN     The number of bits for the exponent of a float

     HIDDENBIT   1, when the significant bit of the mantissa is implicit

SEE ALSO
     limits(4), math(5).




























Page 2                       Reliant UNIX 5.44                Printed 11/98