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AI Engine-ML Intrinsics User Guide (v2025.2)
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AI Engine-ML Intrinsics User Guide (v2025.2)
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Intrinsics to set,get and clear the control registers.
These registers have values by default afte reset.
| Register | Width | Initial | Meaning |
|---|---|---|---|
| crSat - Saturation Mode | 2 | 0 | 0 – No saturation; truncation of MSBs |
| 0 | 1 – Perform saturation | ||
| 0 | 3 – Perform symmetric saturation | ||
| crRnd - Rounding Mode | 4 | 0 | Rounding modes |
| crFPMask | 5 | 0 | Flag mask for floating point operations |
| crF2IMask | 5 | 0 | Flag mask for float to int conversions |
| crF2FMask | 5 | 0 | Flag mask for int to float conversions |
| crMCDEn | 1 | 1 | MCD output enable |
| crSCDEn | 1 | 1 | SCD output enable |
| crVaddSign | 1 | 0 | Sign of dynamic VADD operations |
| crUnpackSign | 1 | 0 | Sign of dynamic unpack operations |
| crPackSign | 1 | 0 | Sign of dynamic pack operations |
| crUPSSign | 1 | 0 | Sign of dynamic UPS operations |
| crSRSSign | 1 | 0 | Sign of dynamic SRS operations |
Miscellaneous control bits | |
Control saturation mode | |
| unsigned int | get_satmode () |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| void | set_satmode (unsigned int val) |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| void | set_sat () |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| void | set_symsat () |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| void | clr_sat () |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| unsigned int | get_sat () |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| unsigned int | get_symsat () |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| unsigned int | get_rnd () |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| void | set_rnd (unsigned int val) |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| unsigned int | get_fpmulmac_mask () |
| Floating point exception flag mask for multiply/accumulate instructions. | |
| void | set_fpmulmac_mask (unsigned int val) |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| unsigned int | get_fp2int_mask () |
| Floating point exception flag mask for float to integer conversions. | |
| void | set_fp2int_mask (unsigned int val) |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| unsigned int | get_fp2bf_mask () |
| Floating point exception flag mask for float to bfloat16 conversions. | |
| void | set_fp2bf_mask (unsigned int val) |
| Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values. | |
| void clr_sat | ( | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| unsigned int get_fp2bf_mask | ( | ) |
Floating point exception flag mask for float to bfloat16 conversions.
| unsigned int get_fp2int_mask | ( | ) |
Floating point exception flag mask for float to integer conversions.
| unsigned int get_fpmulmac_mask | ( | ) |
Floating point exception flag mask for multiply/accumulate instructions.
| unsigned int get_rnd | ( | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| unsigned int get_sat | ( | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| unsigned int get_satmode | ( | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| unsigned int get_symsat | ( | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| void set_fp2bf_mask | ( | unsigned int | val | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| void set_fp2int_mask | ( | unsigned int | val | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| void set_fpmulmac_mask | ( | unsigned int | val | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| void set_rnd | ( | unsigned int | val | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| void set_sat | ( | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| void set_satmode | ( | unsigned int | val | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.
| void set_symsat | ( | ) |
Control for rounding mode (for Shift-Round-Saturate). See Rounding modes for possible values.