Intel® oneAPI Math Kernel Library Developer Reference - Fortran

ScaLAPACK Utility Functions and Routines

This section describes ScaLAPACK utility functions and routines. Summary information about these routines is given in the following table:

ScaLAPACK Utility Functions and Routines

Routine Name

Data Types

Description

p?labad

s,d

Returns the square root of the underflow and overflow thresholds if the exponent-range is very large.

p?lachkieee

s,d

Performs a simple check for the features of the IEEE standard. (C interface function).

p?lamch

s,d

Determines machine parameters for floating-point arithmetic.

p?lasnbt

s,d

Computes the position of the sign bit of a floating-point number. (C interface function).

descinit

N/A

Initializes the array descriptor for distributed matrix.

numroc

N/A

Computes the number of rows or columns of a distributed matrix owned by the process.

See Also