hello from colombia, thank you for your information,

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nljk

This is a useful document but the discussion on integers is quite out of date. All current C compilers support the "stdint.h" file which defines integers in terms of their signedness and their length, so a uin16_t is a 16 bit unsigned integer and a uint32_t is a 32 bit integer (unsigned) and a uint64_t is a 64 bit unsigned integer. Similarly int8_t, int16_t, int32_t, and int64_t are the signed versions.

Also C has a native math type 'complex' which is particularly useful when working with IQ data streams, putting the 'quadrature' value in the imaginary component and the 'inphase' value in the real component is as easy as

#include
#include
complex double x;

x = i_part + q_part * I;