Include Files

Description

The

p?labad

function

takes as input the values computed by

p?lamch

for underflow and overflow, and returns the square root of each of these values if the log of

large

is sufficiently large. This

function

is intended to identify machines with a large exponent range, such as the Crays, and redefine the underflow and overflow limits to be the square roots of the values computed by

p?lamch

. This

function

is needed because

p?lamch

does not compensate for poor arithmetic in the upper half of the exponent range, as is found on a Cray.

In addition, this

function

performs a global minimization and maximization on these values, to support heterogeneous computing networks.