61/100, 33/100 and 94/100 are all periodic numbers in binary (like 1/3 is in decimal). It would take infinite storage to represent them accurately as floats. You're noticing errors from the inability to store the numbers accurately. 
            _____
61/100 = 1.3851EB * 2**(-1)
           _____
33/100 = 1.51EB8  * 2**(-2)
           _____
94/100 = 1.E147A  * 2**(-1)

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(Using hex for the mantisa)

In reply to Re: perl subtraction by ikegami
in thread perl subtraction by jagdish.eashwar

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