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UCVTF (vector, fixed-point)

Unsigned fixed-point Convert to Floating-point (vector).

Syntax

UCVTF Vd.T, Vn.T, #fbits

Where:

Vd
Is the name of the SIMD and FP destination register.
T
Is an arrangement specifier, and can be one of the values shown in Usage.
Vn
Is the name of the SIMD and FP source register.
fbits
Is the number of fractional bits, in the range 1 to the element width.

Usage

Unsigned fixed-point Convert to Floating-point (vector). This instruction converts each element in a vector from fixed-point to floating-point using the rounding mode that is specified by the FPCR, and writes the result to the SIMD and FP destination register.

A floating-point exception can be generated by this instruction. 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 Security state and Exception level in which the instruction is executed, an attempt to execute the instruction might be trapped.

The following table shows the valid specifier combinations:

Table 20-92 UCVTF (Vector) specifier combinations

T fbits
4H  
8H  
2S 1 to 32
4S 1 to 32
2D 1 to 64
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