[R] bracketing for optimize

ivo welch ivowel @ending from gm@il@com
Thu May 31 17:39:07 CEST 2018

dear R wizards:  `optimize()` requires the user to provide the
brackets.  I can write a bracketing routine, given a function and a
starting point, but I was wondering whether there was already a
"standard" user-exposed implementation.  (Presumably, this is used in
nlm, too; alas, nlm is in C, not native R.)  regards, /iaw

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