FMINNM (vectors)
Floating-point minimum number (predicated)
Determine the minimum number value of active floating-point elements of the second source vector and corresponding floating-point elements of the first source vector and destructively place the results in the corresponding elements of the first source vector.
Regardless of the value of FPCR.AH, the behavior is as follows:
Negative zero compares less than positive zero.
If one element is numeric and the other is a quiet NaN, the result is the numeric value.
When FPCR.DN is 0, if either element is a signaling NaN or if both elements are NaNs, the result is a quiet NaN.
When FPCR.DN is 1, if either element is a signaling NaN or if both elements are NaNs, the result is Default NaN.
Inactive elements in the destination vector register remain unmodified.
Green
True
True
True
0
1
1
0
0
1
0
1
!= 00
0
0
0
1
0
1
1
0
0
FMINNM <Zdn>.<T>, <Pg>/M, <Zdn>.<T>, <Zm>.<T>
if !IsFeatureImplemented(FEAT_SVE) && !IsFeatureImplemented(FEAT_SME) then UNDEFINED;
constant integer esize = 8 << UInt(size);
constant integer g = UInt(Pg);
constant integer dn = UInt(Zdn);
constant integer m = UInt(Zm);
<Zdn>
Is the name of the first source and destination scalable vector register, encoded in the "Zdn" field.
<T>
Is the size specifier,
<Pg>
Is the name of the governing scalable predicate register P0-P7, encoded in the "Pg" field.
<Zm>
Is the name of the second source scalable vector register, encoded in the "Zm" field.
CheckSVEEnabled();
constant integer VL = CurrentVL;
constant integer PL = VL DIV 8;
constant integer elements = VL DIV esize;
constant bits(PL) mask = P[g, PL];
constant bits(VL) operand1 = Z[dn, VL];
constant bits(VL) operand2 = if AnyActiveElement(mask, esize) then Z[m, VL] else Zeros(VL);
bits(VL) result;
for e = 0 to elements-1
constant bits(esize) element1 = Elem[operand1, e, esize];
if ActivePredicateElement(mask, e, esize) then
constant bits(esize) element2 = Elem[operand2, e, esize];
Elem[result, e, esize] = FPMinNum(element1, element2, FPCR);
else
Elem[result, e, esize] = element1;
Z[dn, VL] = result;