int main() float original = 3.14159f; q4_12_t fixed = float_to_q4_12(original); float restored = q4_12_to_float(fixed);
// Packing example uint32_t packed = pack_q4_12_pair(fixed, fixed); printf("Packed PF (32-bit): 0x%08X\n", packed); 4q fp pf data type
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. int main() float original = 3
// Convert floating-point to Q4.12 q4_12_t float_to_q4_12(float x) return (q4_12_t)(x * (1 << 12)); int main() float original = 3.14159f
printf("Original: %f\n", original); printf("Q4.12 fixed-point integer: %d\n", fixed); printf("Restored: %f\n", restored);
// Convert Q4.12 back to float float q4_12_to_float(q4_12_t x) return (float)x / (1 << 12);