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fastest way to multiply a number by 9

Tue, 09/12/2006 - 11:30 — sathish_kumar

Give me a fastest way to multiply a number by 9....

‹ use bitwise operator Check if a byte in a word is greater than n ›
Sat, 09/30/2006 - 11:53 — hbilling

fastest way to multiply a number by 9

NIce one man! I was about to give the same ans!

Wed, 09/13/2006 - 15:08 — sathish_kumar

fastest way to multiply a number by 9

good one,i was expecting this !!

Tue, 09/12/2006 - 18:14 — geekgod

fastest way to multiply a number by 9

If the 'number' is an unsigned interger.. you can use bit operations to multiple by 8 and then add the number itself

9n=8n+n;

So

n=100;
product= (n<<3) + n;