fmin

Multi-vector Floating-point Minimum (SME2)

FMIN { <Zdn1>.<T>-<Zdn2>.<T> }, { <Zdn1>.<T>-<Zdn2>.<T> }, { <Zm1>.<T>-<Zm2>.<T> }

Minimum of 2 or 4 FP vectors.

Pseudocode Operation

No pseudocode available.

Encoding

Binary Layout
11000001
31:24
size
23:22
1
21
Zm
20:17
0101100
16:10
010
9:7
0
6
0
5
Zdn
4:1
1
0
 
Format SME2 Float
Opcode 0xC120B101
Extension SME2

Related

Other forms of fmin

  • fmin Floating-Point Minimum (Scalar)
  • fmin Vector Floating-Point Minimum
  • fmin SVE Floating-Point Minimum
  • fmin Floating-Point Minimum (Half-Precision)

More in SME2

Reference

View in Arm A64 ISA Reference ↗ Arm A64 ISA

Instruction Forms

Encoding Instruction ISA Bit pattern
0x0EC03400 FMIN <Vd>.<T>, <Vn>.<T>, <Vm>.<T> A64 0 | Q | 0 | 01110 | 1 | 10 | Rm | 00 | 110 | 1 | Rn | Rd
0x0EA0F400 FMIN <Vd>.<T>, <Vn>.<T>, <Vm>.<T> A64 0 | Q | 0 | 01110 | 1 | sz | 1 | Rm | 11110 | 1 | Rn | Rd
0x1EE05800 FMIN <Hd>, <Hn>, <Hm> A64 0 | 0 | 0 | 11110 | 11 | 1 | Rm | 01 | 01 | 10 | Rn | Rd
0x1E205800 FMIN <Sd>, <Sn>, <Sm> A64 0 | 0 | 0 | 11110 | 00 | 1 | Rm | 01 | 01 | 10 | Rn | Rd
0x1E605800 FMIN <Dd>, <Dn>, <Dm> A64 0 | 0 | 0 | 11110 | 01 | 1 | Rm | 01 | 01 | 10 | Rn | Rd
0xC120A101 FMIN { <Zdn1>.<T>-<Zdn2>.<T> }, { <Zdn1>.<T>-<Zdn2>.<T> }, <Zm>.<T> A64 11000001 | size | 10 | Zm | 101000 | 0100 | 0 | Zdn | 1
0xC120A901 FMIN { <Zdn1>.<T>-<Zdn4>.<T> }, { <Zdn1>.<T>-<Zdn4>.<T> }, <Zm>.<T> A64 11000001 | size | 10 | Zm | 101010 | 0100 | 0 | Zdn | 0 | 1
0xC120B101 FMIN { <Zdn1>.<T>-<Zdn2>.<T> }, { <Zdn1>.<T>-<Zdn2>.<T> }, { <Zm1>.<T>-<Zm2>.<T> } A64 11000001 | size | 1 | Zm | 0101100 | 010 | 0 | 0 | Zdn | 1
0xC120B901 FMIN { <Zdn1>.<T>-<Zdn4>.<T> }, { <Zdn1>.<T>-<Zdn4>.<T> }, { <Zm1>.<T>-<Zm4>.<T> } A64 11000001 | size | 1 | Zm | 00101110 | 010 | 0 | 0 | Zdn | 0 | 1
0x651F8000 FMIN <Zdn>.<T>, <Pg>/M, <Zdn>.<T>, <const> A64 01100101 | size | 011 | 11 | 1 | 100 | Pg | 0000 | i1 | Zdn
0x65078000 FMIN <Zdn>.<T>, <Pg>/M, <Zdn>.<T>, <Zm>.<T> A64 01100101 | size | 00 | 011 | 1 | 100 | Pg | Zm | Zdn

Description

Determine the minimum of floating-point elements of the two or four second source vectors and the corresponding floating-point elements of the two or four first source vectors and destructively place the results in the corresponding elements of the two or four first source vectors. When FPCR.AH is 0, the behavior is as follows: When FPCR.AH is 1, the behavior is as follows: This instruction follows SME2 floating-point numerical behaviors corresponding to instructions that place their results in one or more SVE Z vectors. This instruction is unpredicated.

Operation

CheckStreamingSVEEnabled();
constant integer VL = CurrentVL;
constant integer elements = VL DIV esize;
array [0..3] of bits(VL) results;

for r = 0 to nreg-1
    bits(VL) operand1 = Z[dn+r, VL];
    bits(VL) operand2 = Z[m+r, VL];
    for e = 0 to elements-1
        bits(esize) element1 = Elem[operand1, e, esize];
        bits(esize) element2 = Elem[operand2, e, esize];
        Elem[results[r], e, esize] = FPMin(element1, element2, FPCR);

for r = 0 to nreg-1
    Z[dn+r, VL] = results[r];