Info Catalog calc: Matrix Mode calc: Calculation Modes calc: Working Message

calc: Automatic Recomputation

 
 7.4.7 Automatic Recomputation
 -----------------------------
 
 The “evaluates-to” operator, ‘=>’, has the special property that any
 ‘=>’ formulas on the stack are recomputed whenever variable values or
 mode settings that might affect them are changed.  Evaluates-To
 Operator.
 
    The ‘m C’ (‘calc-auto-recompute’) command turns this automatic
 recomputation on and off.  If you turn it off, Calc will not update ‘=>’
 operators on the stack (nor those in the attached Embedded mode buffer,
 if there is one).  They will not be updated unless you explicitly do so
 by pressing ‘=’ or until you press ‘m C’ to turn recomputation back on.
 (While automatic recomputation is off, you can think of ‘m C m C’ as a
 command to update all ‘=>’ operators while leaving recomputation off.)
 
    To update ‘=>’ operators in an Embedded buffer while automatic
 recomputation is off, use ‘C-x * u’.  Embedded Mode.
 

Info Catalog calc: Matrix Mode calc: Calculation Modes calc: Working Message