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FSQRT (vector)

Floating-point Square Root (vector).

Syntax

FSQRT Vd.T, Vn.T ; Half-precision

FSQRT Vd.T, Vn.T ; Single-precision and double-precision

Where:

T

For the half-precision variant: is an arrangement specifier:

Half-precision
Can be one of 4H or 8H.
Single-precision and double-precision
Can be one of 2S, 4S or 2D.
Vd
Is the name of the SIMD and FP destination register.
Vn
Is the name of the SIMD and FP source register.

Architectures supported (vector)

Supported in ARMv8.2 and later.

Usage

Floating-point Square Root (vector). This instruction calculates the square root for each vector element in the source SIMD and FP register, places the result in a vector, and writes the vector to the destination SIMD and FP register.

This instruction can generate a floating-point exception. Depending on the settings in FPCR in the ARMv8-A Architecture Reference Manual, the exception results in either a flag being set in FPSR in the ARMv8-A Architecture Reference Manual or a synchronous exception being generated. For more information, see Floating-point exception traps in the ARMv8-A Architecture Reference Manual.

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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