SVE Instruction List by Dougall Johnson
# PMULLB: Polynomial multiply long (bottom)

PMULLB Zd.Q, Zn.D, Zm.D (SVE2+PMULL128+NS

svuint64_t svpmullb_pair[_u64](svuint64_t op1, svuint64_t op2)

## 128-bit SVE

Interpreting each even 64-bit integer from (1) and (2) as a ℤ_{2} polynomial, set the double-width (3) to (1) * (2). This can also be described as a carryless multiplication, or a multiplication using exclusive-or instead of addition.

## 256-bit SVE

Interpreting each even 64-bit integer from (1) and (2) as a ℤ_{2} polynomial, set the double-width (3) to (1) * (2). This can also be described as a carryless multiplication, or a multiplication using exclusive-or instead of addition.

## 512-bit SVE

Interpreting each even 64-bit integer from (1) and (2) as a ℤ_{2} polynomial, set the double-width (3) to (1) * (2). This can also be described as a carryless multiplication, or a multiplication using exclusive-or instead of addition.

## Larger sizes

## 1024-bit SVE

Interpreting each even 64-bit integer from (1) and (2) as a ℤ_{2} polynomial, set the double-width (3) to (1) * (2). This can also be described as a carryless multiplication, or a multiplication using exclusive-or instead of addition.

## 2048-bit SVE

Interpreting each even 64-bit integer from (1) and (2) as a ℤ_{2} polynomial, set the double-width (3) to (1) * (2). This can also be described as a carryless multiplication, or a multiplication using exclusive-or instead of addition.

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Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.