20.79 FMOV (vector, immediate)

Floating-point move immediate (vector).

Syntax

FMOV Vd.T, #imm ; Half-precision

FMOV Vd.T, #imm ; Single-precision

FMOV Vd.2D, #imm ; Double-precision

Where:

Vd

The value depends on the instruction variant:

Half-precision
Is the name of the SIMD and FP destination register
Single-precision
Is the name of the SIMD and FP destination register
Double-precision
Is the name of the SIMD and FP destination register
T

Is an arrangement specifier:

Half-precision
Can be one of 4H or 8H.
Single-precision
Can be one of 2S or 4S.
imm

The value depends on the instruction variant:

Half-precision
Is a signed floating-point constant with 3-bit exponent and normalized 4 bits of precision. For details of the range of constants available and the encoding of imm, see Modified immediate constants in A64 floating-point instructions in the Arm® Architecture Reference Manual Arm®v8, for Arm®v8‑A architecture profile.
Single-precision
Is a signed floating-point constant with 3-bit exponent and normalized 4 bits of precision. For details of the range of constants available and the encoding of imm, see Modified immediate constants in A64 floating-point instructions in the Arm® Architecture Reference Manual Arm®v8, for Arm®v8‑A architecture profile.
Double-precision
Is a signed floating-point constant with 3-bit exponent and normalized 4 bits of precision. For details of the range of constants available and the encoding of imm, see Modified immediate constants in A64 floating-point instructions in the Arm® Architecture Reference Manual Arm®v8, for Arm®v8‑A architecture profile.

Architectures supported (vector)

Supported in the Arm®v8.2 architecture and later.

Usage

Floating-point move immediate (vector). This instruction copies an immediate floating-point constant into every element of the SIMD and FP destination register.

Depending on the settings in the CPACR_EL1, CPTR_EL2, and CPTR_EL3 registers, and the current Security state and Exception level, an attempt to execute the instruction might be trapped.

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