Double precision floats (which is what 32-bit Perl uses for decimal numbers) have 53-bits of storage for the mantissa, so about 16 digits.

Just like you can't store 257 in an 8-bit integer, you can't store 3.624920464501920123E+08 in a 53-bit floating point. I has nothing to do with floating point numbers really.

In reply to Re: Not able to substract 2 big numbers with the right precision by ikegami
in thread Not able to substract 2 big numbers with the right precision by Anonymous Monk

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