MATLAB Function Reference    

Base 2 power and scale floating-point numbers



X = pow2(Y) returns an array X whose elements are 2 raised to the power Y.

X = pow2(F,E) computes for corresponding elements of F and E. The result is computed quickly by simply adding E to the floating-point exponent of F. Arguments F and E are real and integer arrays, respectively.


This function corresponds to the ANSI C function ldexp() and the IEEE floating-point standard function scalbn().


For IEEE arithmetic, the statement X = pow2(F,E) yields the values:

See Also

log2, exp, hex2num, realmax, realmin

The arithmetic operators ^ and .^

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