xerbla

Developer Reference for Intel® oneAPI Math Kernel Library for C

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ID 766684

Date 3/31/2023

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xerbla

Error handling function called by BLAS, LAPACK, Vector Math, and Vector Statistics functions.

Syntax

void xerbla( const char * srname, const int* info, const int len );

Include Files

mkl.h

Input Parameters

Name	Type	Description
srname	const char*	The name of the routine that called xerbla
info	const int*	The position of the invalid parameter in the parameter list of the calling function or an error code
len	const int	Length of the source string

Description

The xerbla function is an error handler for Intel® oneAPI Math Kernel Library BLAS, LAPACK, Vector Math, and Vector Statistics functions. These functions call xerbla if an issue is encountered on entry or during the function execution.

xerbla operates as follows:

Prints a message that depends on the value of the info parameter as explained in the following table.

NOTE:

A specific message can differ from the listed messages in numeric values and/or function names.
Returns to the calling application.

Error Messages Printed by xerbla
Value of info	Error Message
1001	`Intel MKL ERROR: Incompatible optional parameters on entry to DGEMM.`
1000 or 1089	`Intel MKL INTERNAL ERROR: Insufficient workspace available in function CGELSD.`
< 0	`Intel MKL INTERNAL ERROR: Condition 1 detected in function DLASD8.`
Other	`The position of the invalid parameter in the parameter list of the calling function.`

Note that xerbla is an internal function. You can change or disable printing of an error message by providing your own xerbla function. The following examples illustrate usage of xerbla.

Example

void xerbla(char* srname, int* info, int len){
// srname - name of the function that called xerbla
// info - position of the invalid parameter in the parameter list
// len - length of the name in bytes
printf("\nXERBLA is called :%s: %d\n",srname,*info);
}

Parent topic: Error Handling for Linear Algebra Routines

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