AE_MAXABS64S — 64-bit signed maximum of absolute value with saturation

Instruction Word

Slot
ae2_slot0
6
3
6
2
6
1
6
0
5
9
5
8
5
7
5
6
5
5
5
4
5
3
5
2
5
1
5
0
4
9
4
8
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9876543210
Format ae_format2 - 64 bit(s)0000 1110
AE_MAXABS64S 1000000000010101 0001
ae_fld_cmpp_v 3210
ae_fld_cmpp_v0 3210
ae_fld_cmpp_v1 3210

Slot
ae_slot2_1
6
3
6
2
6
1
6
0
5
9
5
8
5
7
5
6
5
5
5
4
5
3
5
2
5
1
5
0
4
9
4
8
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
3
2
3
1
3
0
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
9876543210
Format ae_format1 - 64 bit(s)1 1110
AE_MAXABS64S 0110110
ae_fld_cmpp_v 3210
ae_fld_cmpp_v0 3210
ae_fld_cmpp_v1 3210

Assembler Syntax

AE_MAXABS64S aed0..15(ae_cmpp_v), aed0..15(ae_cmpp_v0), aed0..15(ae_cmpp_v1)

C Syntax

#include <xtensa/tie/xt_hifi2.h>

extern ae_f64 AE_MAXABS64S(ae_f64 d0, ae_f64 d1);

Description

AE_MAXABS64S is a signed saturating 64-bit maximum of the absolute value of two AE_DR registers d0 and d1, with result placed in d. In case of saturation, state AE_OVERFLOW is set to 1.

Implementation Pipeline

In Out
AE_OVERFLOW Wstage, ae_cmpp_v0 Mstage, ae_cmpp_v1 Mstage AE_OVERFLOW Wstage, ae_cmpp_v Mstage

Protos that use AE_MAXABS64S

proto AE_MAXABS64S { out ae_f64 d, in ae_f64 d0, in ae_f64 d1 }{}{
AE_MAXABS64S d, d0, d1;
}
proto AE_MAXABSSQ56S { out ae_q56s d, in ae_q56s d0, in ae_q56s d1 }{}{
AE_MAXABS64S d, d0, d1;
}