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| author | Mattias Engdegård <mattiase@acm.org> | 2019-07-10 19:24:58 +0200 |
|---|---|---|
| committer | Mattias Engdegård <mattiase@acm.org> | 2019-07-10 19:28:35 +0200 |
| commit | 83ed722c8d9d4d9d4143062584b89f79f3b8104a (patch) | |
| tree | f3198328e2c76888dff61833ba1ebad8440a9ce5 /lisp/calc/calc-alg.el | |
| parent | ff5dd4ed76c9854ad8a566cea8ddcdf5c8ffabd6 (diff) | |
| download | emacs-83ed722c8d9d4d9d4143062584b89f79f3b8104a.tar.gz emacs-83ed722c8d9d4d9d4143062584b89f79f3b8104a.tar.bz2 emacs-83ed722c8d9d4d9d4143062584b89f79f3b8104a.zip | |
Fix trig simplification crash (bug#33052)
* lisp/calc/calc-alg.el (calcFunc-sec, calcFunc-csc, calcFunc-cot):
Check that `math-known-sin' and `math-known-tan' succeeded before
using their value in arithmetic.
* test/lisp/calc/calc-tests.el (calc-test-trig): Add regression tests.
Diffstat (limited to 'lisp/calc/calc-alg.el')
| -rw-r--r-- | lisp/calc/calc-alg.el | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/lisp/calc/calc-alg.el b/lisp/calc/calc-alg.el index 136b18e48f5..c3efeeeb62c 100644 --- a/lisp/calc/calc-alg.el +++ b/lisp/calc/calc-alg.el @@ -842,11 +842,13 @@ and should return the simplified expression to use (or nil)." (and (eq calc-angle-mode 'rad) (let ((n (math-linear-in (nth 1 expr) '(var pi var-pi)))) (and n - (math-div 1 (math-known-sin (car n) (nth 1 n) 120 300))))) + (let ((s (math-known-sin (car n) (nth 1 n) 120 300))) + (and s (math-div 1 s)))))) (and (eq calc-angle-mode 'deg) (let ((n (math-integer-plus (nth 1 expr)))) (and n - (math-div 1 (math-known-sin (car n) (nth 1 n) '(frac 2 3) 300))))) + (let ((s (math-known-sin (car n) (nth 1 n) '(frac 2 3) 300))) + (and s (math-div 1 s)))))) (and (eq (car-safe (nth 1 expr)) 'calcFunc-arcsin) (math-div 1 @@ -867,11 +869,13 @@ and should return the simplified expression to use (or nil)." (and (eq calc-angle-mode 'rad) (let ((n (math-linear-in (nth 1 expr) '(var pi var-pi)))) (and n - (math-div 1 (math-known-sin (car n) (nth 1 n) 120 0))))) + (let ((s (math-known-sin (car n) (nth 1 n) 120 0))) + (and s (math-div 1 s)))))) (and (eq calc-angle-mode 'deg) (let ((n (math-integer-plus (nth 1 expr)))) (and n - (math-div 1 (math-known-sin (car n) (nth 1 n) '(frac 2 3) 0))))) + (let ((s (math-known-sin (car n) (nth 1 n) '(frac 2 3) 0))) + (and s (math-div 1 s)))))) (and (eq (car-safe (nth 1 expr)) 'calcFunc-arcsin) (math-div 1 (nth 1 (nth 1 expr)))) (and (eq (car-safe (nth 1 expr)) 'calcFunc-arccos) @@ -972,11 +976,13 @@ and should return the simplified expression to use (or nil)." (and (eq calc-angle-mode 'rad) (let ((n (math-linear-in (nth 1 expr) '(var pi var-pi)))) (and n - (math-div 1 (math-known-tan (car n) (nth 1 n) 120))))) + (let ((tn (math-known-tan (car n) (nth 1 n) 120))) + (and tn (math-div 1 tn)))))) (and (eq calc-angle-mode 'deg) (let ((n (math-integer-plus (nth 1 expr)))) (and n - (math-div 1 (math-known-tan (car n) (nth 1 n) '(frac 2 3)))))) + (let ((tn (math-known-tan (car n) (nth 1 n) '(frac 2 3)))) + (and tn (math-div 1 tn)))))) (and (eq (car-safe (nth 1 expr)) 'calcFunc-arcsin) (math-div (list 'calcFunc-sqrt (math-sub 1 (math-sqr (nth 1 (nth 1 expr))))) |