1Blurb:: 2Singular convergence tolerance 3Description:: 4\c singular_conv_tol 5(NL2SOL's \c sctol) is the singular convergence tolerance, which works 6in conjunction with \ref method-nl2sol-singular_radius to test for 7underdetermined least-squares problems (stop when the relative 8reduction yet possible in the sum of squares appears less then \c 9singular_conv_tol for steps of scaled length at most \ref method-nl2sol-singular_radius). 10 11The internal default is a function of machine epsilon 12(as limited by \c function_precision). The default is selected with a value of -1. 13 14Topics:: 15Examples:: 16Theory:: 17Faq:: 18See_Also:: 19