Step 1: Set i=1 FA=f(a)

Step 2: while i≤ No do step 3-6.

Step 3 set p=(a+b)/2 FP=f(p)

Step 4 if FP<TOL or (b-a)/2<TOL then OUTPUT(p) STOP.

Step 5 set i=i+1

Step 6 if FA.FP > 0 then set a=p FA=FP else set b=p.

Step 7 OUTPUT (‘Method failed after No iteration,No=’, No) STOP.-Step 1: Set i=1 FA=f(a)

Step 2: while i≤ No do step 3-6.

　　Step 3 set p=(a+b)/2 FP=f(p)

　　Step 4 if FP<TOL or (b-a)/2<TOL then OUTPUT(p) STOP.

　　Step 5 set i=i+1

　　Step 6 if FA.FP > 0 then set a=p　FA=FP else set b=p.

Step 7 OUTPUT (‘Method failed after No iteration,No=’, No) STOP.