SCVTF (scalar, fixed-point)

Signed fixed-point convert to floating-point (scalar)

This instruction converts the signed value in the 32-bit or 64-bit general-purpose source register to a floating-point value using the rounding mode that is specified by the FPCR, and writes the result to the SIMD&FP destination register.

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

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.

Decode for all variants of this encoding

if !IsFeatureImplemented(FEAT_FP) then EndOfDecode(Decode_UNDEF); end; if ftype == '10' then EndOfDecode(Decode_UNDEF); end; if ftype == '11' && !IsFeatureImplemented(FEAT_FP16) then EndOfDecode(Decode_UNDEF); end; if sf == '0' && scale[5] == '0' then EndOfDecode(Decode_UNDEF); end; let d : integer{} = UInt(Rd); let n : integer{} = UInt(Rn); let intsize : integer{} = 32 << UInt(sf); let decode_fltsize : integer{} = 8 << UInt(ftype XOR '10'); let fracbits : integer = 64 - UInt(scale); let unsigned : boolean = FALSE;