ZeroTolerance -- optional input to set the largest absolute value that should be treated as zero

Functions with optional argument named ZeroTolerance:

• checkPD(...,ZeroTolerance=>...) -- optional input to set the largest absolute value that should be treated as zero
• checkPSD(...,ZeroTolerance=>...) -- optional input to set the largest absolute value that should be treated as zero
• solverMLE(...,ZeroTolerance=>...) -- optional input to set the largest absolute value that should be treated as zero