VRINTX (floating-point)

Round floating-point to integer inexact rounds a floating-point value to an integral floating-point value of the same size, using the rounding mode specified in the FPSCR, and raises an Inexact exception when the result value is not numerically equal to the input value. A zero input gives a zero result with the same sign, an infinite input gives an infinite result with the same sign, and a NaN is propagated as for normal arithmetic.

It has encodings from the following instruction sets: A32 ( A1 ) and T32 ( T1 ) .

A1

Decode for all variants of this encoding

if size == '00' || (size == '01' && !IsFeatureImplemented(FEAT_FP16)) then UNDEFINED; if size == '01' && cond != '1110' then UNPREDICTABLE; constant exact = TRUE; constant integer esize = 8 << UInt(size); constant integer d = if size == '11' then UInt(D:Vd) else UInt(Vd:D); constant integer m = if size == '11' then UInt(M:Vm) else UInt(Vm:M);

T1

Decode for all variants of this encoding

if size == '00' || (size == '01' && !IsFeatureImplemented(FEAT_FP16)) then UNDEFINED; if size == '01' && InITBlock() then UNPREDICTABLE; constant exact = TRUE; constant integer esize = 8 << UInt(size); constant integer d = if size == '11' then UInt(D:Vd) else UInt(Vd:D); constant integer m = if size == '11' then UInt(M:Vm) else UInt(Vm:M);

CONSTRAINED UNPREDICTABLE behavior

If InITBlock(), then one of the following behaviors must occur:

• The instruction is undefined.
• The instruction executes as if it passes the Condition code check.
• The instruction executes as NOP. This means it behaves as if it fails the Condition code check.