Representation of IEEE 754 standard

[elecs_gene]

floating point ALU

hi guys,
i have a serious doubt in representation of ieee 754 standard of represenation i.e. single precision std..assuming that i have a normalized form of representation(leading bit to be 1 always),with the exponent of 8 bits,mantissa of 23 bits,what is the maximum and minimum positive number that could be represented by this standard??how is 0 represented??

with regards

 

[positive_edge]

Re: floating point ALU

Maximum no is 2 - 2^23 with exponent 254( with bias)

Minimum no is 2^-126 since all zero exponent is not possible according to IEEE standard

correct me if i am wrong

 

[elecs_gene]

Re: floating point ALU

hi posotive_edge,
thanks for ur reply.. i have one more doubt regarding the FPU...what should be the exceptions that a FPU must give i.e i know nan,qnan & snan are a must..what others should i signal??and when exactly are qnan & snan signalled??

regards