Description

Following are descriptions for REAL, REAL*4, REAL*8, and REAL*16.

REAL

For a declaration such as REAL W, the variable W is usually a REAL*4 element in memory, interpreted as a real number. Specifying the size is nonstandard. @

The default size, for a declaration such as REAL H, can be altered by compiling with any of the options -dbl, -r8, or -xtypemap. See the discussion in Chapter 2 for details.

REAL*4 @

For a declaration such as REAL*4 W, the variable W is always a REAL*4 element in memory, interpreted as a single-width real number.

REAL*8 @

For a declaration such as REAL*8 W, the variable W is always a REAL*8 element in memory, interpreted as a double-width real number.

REAL*16 @

(SPARC only) For a declaration such as REAL*16 W, the variable W is always an element of type REAL*16 in memory, interpreted as a quadruple-width real.