### SLA_MXM

Multiply $3×3$ Matrices

ACTION:
Product of two $3×3$ matrices (single precision).
CALL:
CALL sla_MXM (A, B, C)
##### GIVEN:
 A R(3,3) matrix A B R(3,3) matrix B

##### RETURNED:
 C R(3,3) matrix result: A$×$B

NOTE:
To comply with the ANSI Fortran 77 standard, A, B and C must be different arrays. The routine is, in fact, coded so as to work properly with many Fortran compilers even if this rule is violated, something that is not, however, recommended.