Hi Ramesh, The double type on PowerPC with GCC is represented in IEEE 754 fashion. 64 bits "double precision". SXXXXXXX XXXXIMMMM MMMMMMMM MMMMMMMM MMMMMMMM MMMMMMMM MMMMMMMM MMMMMMMM S is the 1 sign bit X is the 11 exponent bits (+1023 biased) I is the implied (virtual) most-significant bit for normalized numbers M is the 52 mantissa bits The order above is byte-by-byte from low memory address to high memory address. HTH, --Eljay http://en.wikipedia.org/wiki/IEEE_754
