latrs: triangular solve with robust scaling

Functions
subroutine	clatrs (UPLO, TRANS, DIAG, NORMIN, N, A, LDA, X, SCALE, CNORM, INFO)
	CLATRS solves a triangular system of equations with the scale factor set to prevent overflow. More...
subroutine	dlatrs (UPLO, TRANS, DIAG, NORMIN, N, A, LDA, X, SCALE, CNORM, INFO)
	DLATRS solves a triangular system of equations with the scale factor set to prevent overflow. More...
subroutine	slatrs (UPLO, TRANS, DIAG, NORMIN, N, A, LDA, X, SCALE, CNORM, INFO)
	SLATRS solves a triangular system of equations with the scale factor set to prevent overflow. More...
subroutine	zlatrs (UPLO, TRANS, DIAG, NORMIN, N, A, LDA, X, SCALE, CNORM, INFO)
	ZLATRS solves a triangular system of equations with the scale factor set to prevent overflow. More...

Detailed Description