FMINNM (scalar)
Floating-point minimum number (scalar)
This instruction compares the first and second
source SIMD&FP register values,
and writes the smaller of the two floating-point values
to the destination SIMD&FP register.
Regardless of the value of FPCR.AH,
the behavior is as follows:
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 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 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.
0
0
0
1
1
1
1
0
1
0
1
1
1
1
0
1
1
FMINNM <Hd>, <Hn>, <Hm>
0
0
FMINNM <Sd>, <Sn>, <Sm>
0
1
FMINNM <Dd>, <Dn>, <Dm>
if ftype == '10' || (ftype == '11' && !IsFeatureImplemented(FEAT_FP16)) then UNDEFINED;
constant integer d = UInt(Rd);
constant integer n = UInt(Rn);
constant integer m = UInt(Rm);
constant integer esize = 8 << UInt(ftype EOR '10');
<Hd>
Is the 16-bit name of the SIMD&FP destination register, encoded in the "Rd" field.
<Hn>
Is the 16-bit name of the first SIMD&FP source register, encoded in the "Rn" field.
<Hm>
Is the 16-bit name of the second SIMD&FP source register, encoded in the "Rm" field.
<Sd>
Is the 32-bit name of the SIMD&FP destination register, encoded in the "Rd" field.
<Sn>
Is the 32-bit name of the first SIMD&FP source register, encoded in the "Rn" field.
<Sm>
Is the 32-bit name of the second SIMD&FP source register, encoded in the "Rm" field.
<Dd>
Is the 64-bit name of the SIMD&FP destination register, encoded in the "Rd" field.
<Dn>
Is the 64-bit name of the first SIMD&FP source register, encoded in the "Rn" field.
<Dm>
Is the 64-bit name of the second SIMD&FP source register, encoded in the "Rm" field.
CheckFPEnabled64();
constant bits(esize) operand1 = V[n, esize];
constant bits(esize) operand2 = V[m, esize];
bits(128) result = if IsMerging(FPCR) then V[n, 128] else Zeros(128);
Elem[result, 0, esize] = FPMinNum(operand1, operand2, FPCR);
V[d, 128] = result;