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SIMD ISAReturn TypeNameArgumentsInstruction Group
Neonuint64_tvcgtd_f64(float64_t a, float64_t b)Compare / Greater than
Description
Floating-point Compare Greater than (vector). This instruction reads each floating-point value in the first source SIMD&FP register and if the value is greater than the corresponding floating-point value in the second source SIMD&FP register sets every bit of the corresponding vector element in the destination SIMD&FP register to one, otherwise sets every bit of the corresponding vector element in the destination SIMD&FP register to zero.
Results
Dd result
This intrinsic compiles to the following instructions:

FCMGT Dd,Dn,Dm

Argument Preparation
a register: Dnb register: Dm
Architectures
A64

Operation

CheckFPAdvSIMDEnabled64();
bits(datasize) operand1 = V[n];
bits(datasize) operand2 = V[m];

bits(esize) element1;
bits(esize) element2;
boolean test_passed;
FPCRType fpcr    = FPCR[];
boolean merge    = elements == 1 && IsMerging(fpcr);
bits(128) result = if merge then V[m] else Zeros();

for e = 0 to elements-1
    element1 = Elem[operand1, e, esize];
    element2 = Elem[operand2, e, esize];
    if abs then
        element1 = FPAbs(element1);
        element2 = FPAbs(element2);
    case cmp of
        when CompareOp_EQ test_passed = FPCompareEQ(element1, element2, fpcr);
        when CompareOp_GE test_passed = FPCompareGE(element1, element2, fpcr);
        when CompareOp_GT test_passed = FPCompareGT(element1, element2, fpcr);
    Elem[result, e, esize] = if test_passed then Ones() else Zeros();

V[d] = result;