FSCALE

Floating-point adjust exponent by vector

This instruction multiplies the floating-point elements of the first source vector by 2.0 to the power of the signed integer values in the corresponding elements of the second source vector, and places the results in the corresponding elements of the destination vector.

It has encodings from 2 classes: Half-precision and Single-precision and double-precision

Half-precision
(FEAT_FP8)

Decode for this encoding

if !IsFeatureImplemented(FEAT_FP8) then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 16; let d : integer{} = UInt(Rd); let n : integer{} = UInt(Rn); let m : integer{} = UInt(Rm); let datasize : integer{} = if Q == '1' then 128 else 64; let elements : integer = datasize DIV esize;

Single-precision and double-precision
(FEAT_FP8)

Decode for this encoding

if !IsFeatureImplemented(FEAT_FP8) then EndOfDecode(Decode_UNDEF); end; if Q == '0' && size == '11' then EndOfDecode(Decode_UNDEF); end; let esize : integer{} = 8 << UInt(size); let d : integer{} = UInt(Rd); let n : integer{} = UInt(Rn); let m : integer{} = UInt(Rm); let datasize : integer{} = if Q == '1' then 128 else 64; let elements : integer = datasize DIV esize;