FLTUND

 NUMBER:  74

 ERROR CODE:  E

 MESSAGE TEXT:  Floating underflow

 EXPLANATION:  During an arithmetic operation, a floating-point
 value became less than the smallest finite value for that data
 type.  The underflowed result was either set to zero or, depending
 on the value of the /IEEE_MODE qualifier when /FLOAT=IEEE_FLOAT was
 specified, allowed to gradually underflow.

 This error is not returned by IOSTAT.

 For ranges of the various data types, see the Data Representation
 chapter in the HP Fortran for OpenVMS User Manual.