Developer Reference

  • 0.9
  • 09/09/2020
  • Public Content

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
Returns the square root of the underflow and overflow thresholds if the exponent-range is very large.
Performs a simple check for the features of the IEEE standard.
Determines machine parameters for floating-point arithmetic.
Computes the position of the sign bit of a floating-point number.
Initializes the array descriptor for distributed matrix.
Computes the number of rows or columns of a distributed matrix owned by the process.

Product and Performance Information


Intel's compilers may or may not optimize to the same degree for non-Intel microprocessors for optimizations that are not unique to Intel microprocessors. These optimizations include SSE2, SSE3, and SSSE3 instruction sets and other optimizations. Intel does not guarantee the availability, functionality, or effectiveness of any optimization on microprocessors not manufactured by Intel. Microprocessor-dependent optimizations in this product are intended for use with Intel microprocessors. Certain optimizations not specific to Intel microarchitecture are reserved for Intel microprocessors. Please refer to the applicable product User and Reference Guides for more information regarding the specific instruction sets covered by this notice.

Notice revision #20110804