Raymond Toy pushed to branch master at cmucl / cmucl
Commits: e28e38ce by Raymond Toy at 2015-12-31T14:02:26Z Add better description of the output of x87-floating-point-modes
- - - - -
1 changed file:
- src/compiler/x86/float.lisp
Changes:
===================================== src/compiler/x86/float.lisp ===================================== --- a/src/compiler/x86/float.lisp +++ b/src/compiler/x86/float.lisp @@ -2340,6 +2340,13 @@ ;; ;; When one of the mask bits (0-5) is set, then that exception is ;; masked so that no exception is generated. +;; +;; Returns the control and status words merged into one. The low 16 +;; bits contains the control word with the exception mask bits +;; inverted to indicate exception enable bits. The high 16 bits +;; contains the status word, but the top 8 bits of the status word are +;; cleared, effectively removing the condition code, top-of-stack +;; bits, and the FPU busy bit. (define-vop (x87-floating-point-modes) (:results (res :scs (unsigned-reg))) (:result-types unsigned-num)
View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/commit/e28e38cee467fee161d8acba7e...