SVE Instruction List by Dougall Johnson
# UQDECP (scalar): Unsigned saturating decrement scalar by count of true predicate elements

UQDECP Xdn, Pm.D (SVE (SME

uint64_t svqdecp[_n_u64]_b64(uint64_t op, svbool_t pg)

## 128-bit SVE

Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with unsigned saturation to zero.

## 256-bit SVE

Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with unsigned saturation to zero.

## 512-bit SVE

Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with unsigned saturation to zero.

## Larger sizes

## 1024-bit SVE

Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with unsigned saturation to zero.

## 2048-bit SVE

Considering only predicate bits from (1) corresponding to 64-bit elements, set (3) to (2) − popcount( (1) ), with unsigned saturation to zero.

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