FCLAMP
Floating-point clamp to minimum/maximum number
Clamp each floating-point element in the destination vector to between the floating-point minimum value in the corresponding element of the first source vector and the floating-point maximum value in the corresponding element of the second source vector and destructively place the clamped results in the corresponding elements of the destination vector.
Regardless of the value of FPCR.AH, the behavior is as follows for each minimum number and maximum number operation:
Negative zero compares less than positive zero.
If one value is numeric and the other is a quiet NaN, the result is the numeric value.
When FPCR.DN is 0, if either value is a signaling NaN or if both values are NaNs, the result is a quiet NaN.
When FPCR.DN is 1, if either value is a signaling NaN or if both values are NaNs, the result is Default NaN.
This instruction is unpredicated.
Green
False
True
0
1
1
0
0
1
0
0
!= 00
1
0
0
1
0
0
1
FCLAMP <Zd>.<T>, <Zn>.<T>, <Zm>.<T>
if !IsFeatureImplemented(FEAT_SME2) && !IsFeatureImplemented(FEAT_SVE2p1) then UNDEFINED;
constant integer esize = 8 << UInt(size);
constant integer n = UInt(Zn);
constant integer m = UInt(Zm);
constant integer d = UInt(Zd);
<Zd>
Is the name of the destination scalable vector register, encoded in the "Zd" field.
<T>
Is the size specifier,
<Zn>
Is the name of the first source scalable vector register, encoded in the "Zn" 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;
bits(VL) result;
constant bits(VL) operand1 = Z[n, VL];
constant bits(VL) operand2 = Z[m, VL];
constant bits(VL) operand3 = Z[d, VL];
for e = 0 to elements-1
constant bits(esize) element1 = Elem[operand1, e, esize];
constant bits(esize) element2 = Elem[operand2, e, esize];
constant bits(esize) element3 = Elem[operand3, e, esize];
Elem[result, e, esize] = FPMinNum(FPMaxNum(element1, element3, FPCR), element2, FPCR);
Z[d, VL] = result;