SVE Instruction List by Dougall Johnson
RADDHNB: Rounding add narrow high part (bottom)
RADDHNB Zd.S, Zn.D, Zm.D (SVE2 (SME
svint32_t svraddhnb[_s64](svint64_t op1, svint64_t op2)
svuint32_t svraddhnb[_u64](svuint64_t op1, svuint64_t op2)
128-bit SVE

For each 64-bit integer set the even 32-bit elements of (3) to ( (1) + (2) + 0x80000000 ) >> 32, and zero odd elements.
256-bit SVE

For each 64-bit integer set the even 32-bit elements of (3) to ( (1) + (2) + 0x80000000 ) >> 32, and zero odd elements.
512-bit SVE

For each 64-bit integer set the even 32-bit elements of (3) to ( (1) + (2) + 0x80000000 ) >> 32, and zero odd elements.
Larger sizes
1024-bit SVE

For each 64-bit integer set the even 32-bit elements of (3) to ( (1) + (2) + 0x80000000 ) >> 32, and zero odd elements.
2048-bit SVE

For each 64-bit integer set the even 32-bit elements of (3) to ( (1) + (2) + 0x80000000 ) >> 32, and zero odd elements.
Report mistakes or give feedback
Inspired by and based on the x86/x64 SIMD Instruction List by Daytime.