Cosine-Sine (CS) decomposition

Modules
	bbcsd: ??
	{un,or}csd: ??
	{un,or}csd2by1: ??
	{un,or}bdb: bidiagonalize partitioned unitary matrix, step in uncsd
	{un,or}bdb1: step in uncsd2by1
	{un,or}bdb2: step in uncsd2by1
	{un,or}bdb3: step in uncsd2by1
	{un,or}bdb4: step in uncsd2by1
	{un,or}bdb5: step in uncsd2by1
	{un,or}bdb6: step in uncsd2by1
	lapmr: permute rows
	lapmt: permute cols

Detailed Description