SVE Instruction List by Dougall Johnson
See "FCVTZS" in the exploration tools

FCVTZS: Floating-point convert to signed integer, rounding toward zero (predicated)

FCVTZS Zd.D, Pg/M, Zn.H (SVE (SME
svint64_t svcvt_s64[_f16]_m(svint64_t inactive, svbool_t pg, svfloat16_t op)

128-bit SVE

Set each 64-bit lane of (2) by taking the lowest overlapping 16-bit floating point value from (1) and converting it to a signed 64-bit integer, rounding towards zero, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000.

256-bit SVE

Set each 64-bit lane of (2) by taking the lowest overlapping 16-bit floating point value from (1) and converting it to a signed 64-bit integer, rounding towards zero, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000.

512-bit SVE

Set each 64-bit lane of (2) by taking the lowest overlapping 16-bit floating point value from (1) and converting it to a signed 64-bit integer, rounding towards zero, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000.

Larger sizes

1024-bit SVE

Set each 64-bit lane of (2) by taking the lowest overlapping 16-bit floating point value from (1) and converting it to a signed 64-bit integer, rounding towards zero, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000.

2048-bit SVE

Set each 64-bit lane of (2) by taking the lowest overlapping 16-bit floating point value from (1) and converting it to a signed 64-bit integer, rounding towards zero, with signed saturation to 0x7FFFFFFFFFFFFFFF or −0x8000000000000000.

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