4q Fp Pf: Data Type

// Pack two Q4.12 values into one 32-bit "PF" type uint32_t pack_q4_12_pair(q4_12_t a, q4_12_t b) (uint32_t)(b & 0xFFFF);

// Convert floating-point to Q4.12 q4_12_t float_to_q4_12(float x) return (q4_12_t)(x * (1 << 12)); 4q fp pf data type

If you’ve recently stumbled across the term in a datasheet, DSP library, or legacy firmware comment, you might have scratched your head. It looks like someone fell asleep on the keyboard. // Pack two Q4

return 0;

printf("Original: %f\n", original); printf("Q4.12 fixed-point integer: %d\n", fixed); printf("Restored: %f\n", restored); q4_12_t b) (uint32_t)(b & 0xFFFF)

But in the world of and FPGA programming , this cryptic string actually tells you everything about how a number is stored—without using a single floating-point unit.