flmin(3F)

NAME

flmin, flmax, ffrac, dflmin, dflmax, dffrac, inmax − return extreme values

SYNOPSIS

function flmin() function flmax() function ffrac() double precision function dflmin() double precision function dflmax() double precision function dffrac() function inmax()

DESCRIPTION

Functions flmin and flmax return the minimum and maximum positive floating point values, respectively. Functions dflmin and dflmax return the minimum and maximum positive double precision floating point values. Function inmax returns the maximum positive integer value.

The functions ffrac and dffrac return the fractional accuracy of single and double precision floating point numbers, respectively. These are the smallest numbers that can be added to 1.0 without being lost.

These functions can be used by programs that must scale algorithms to the numerical range of the processor.

FILES

/usr/lib/libF77.a

NOTES

When compiling source with the -Qocs option, an explicit underscore needs to be added to the end of the routine names.