SVE Instruction List by Dougall Johnson
# SQCADD: Saturating complex integer add with 90° rotate

SQCADD Zdn.D, Zdn.D, Zm.D, #90 (SVE2 (SME

svint64_t svqcadd[_s64](svint64_t op1, svint64_t op2, 90)

## 128-bit SVE

For each pair of 64-bit integers, considered as the real and imaginary components of a complex number, set (3) to (2) + ( (1) rotated by 90° ), with signed saturation of each component to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000 on overflow.

## 256-bit SVE

For each pair of 64-bit integers, considered as the real and imaginary components of a complex number, set (3) to (2) + ( (1) rotated by 90° ), with signed saturation of each component to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000 on overflow.

## 512-bit SVE

For each pair of 64-bit integers, considered as the real and imaginary components of a complex number, set (3) to (2) + ( (1) rotated by 90° ), with signed saturation of each component to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000 on overflow.

## Larger sizes

## 1024-bit SVE

For each pair of 64-bit integers, considered as the real and imaginary components of a complex number, set (3) to (2) + ( (1) rotated by 90° ), with signed saturation of each component to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000 on overflow.

## 2048-bit SVE

For each pair of 64-bit integers, considered as the real and imaginary components of a complex number, set (3) to (2) + ( (1) rotated by 90° ), with signed saturation of each component to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000 on overflow.

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