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FORTRAN 77 Language Reference

Environmental Inquiry Functions @

None of these functions are part of the FORTRAN 77 Standard.

Table 6-7 Environmental Inquiry Functions

Definition 

No. of Args. 

Generic Name 

Argument Type 

Function Type 

Base of Number System 

1 

EPBASE INTEGER REAL DOUBLE REAL*16INTEGER INTEGER INTEGER INTEGER

Number of Significant Bits 

1 

EPPREC INTEGER REAL DOUBLE REAL*16INTEGER INTEGER INTEGER INTEGER

Minimum Exponent 

1 

EPEMIN REAL DOUBLE REAL*16INTEGER INTEGER INTEGER

Maximum Exponent 

1 

EPEMAX REAL DOUBLE REAL*16INTEGER INTEGER INTEGER

Least Nonzero Number 

1 

EPTINY REAL DOUBLE REAL*16REAL DOUBLE REAL*16

Largest Number Representable 

1 

EPHUGE INTEGER REAL DOUBLE REAL*16INTEGER REAL DOUBLE REAL*16

Epsilon See Note (16).

1 

EPMRSP REAL DOUBLE REAL*16REAL DOUBLE REAL*16