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Add V3Number rotate functions; unused as yet

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This commit is contained in:
Wilson Snyder
2011-03-30 21:31:29 -04:00
parent 3269cc3d90
commit 02f3beb8db
4 changed files with 39 additions and 3 deletions
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src/V3Number.cpp
+34 -1
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@@ -1011,6 +1011,30 @@ V3Number& V3Number::opLteS (const V3Number& lhs, const V3Number& rhs) {
return opGteS(rhs,lhs);
}
V3Number& V3Number::opRotR (const V3Number& lhs, const V3Number& rhs) {
// L(lhs) bit return
if (rhs.isFourState()) return setAllBitsX();
setZero();
uint32_t rhsval = rhs.toUInt();
for (int bit=0; bit<this->width(); bit++) {
setBit(bit,lhs.bitIs((bit + rhsval) % this->width()));
}
return *this;
}
V3Number& V3Number::opRotL (const V3Number& lhs, const V3Number& rhs) {
// L(lhs) bit return
if (rhs.isFourState()) return setAllBitsX();
setZero();
uint32_t rhsval = rhs.toUInt();
for (int bit=0; bit<this->width(); bit++) {
if (bit >= (int)rhsval) {
setBit(bit,lhs.bitIs((bit - rhsval) % this->width()));
}
}
return *this;
}
V3Number& V3Number::opShiftR (const V3Number& lhs, const V3Number& rhs) {
// L(lhs) bit return
if (rhs.isFourState()) return setAllBitsX();
@@ -1038,8 +1062,8 @@ V3Number& V3Number::opShiftRS (const V3Number& lhs, const V3Number& rhs) {
V3Number& V3Number::opShiftL (const V3Number& lhs, const V3Number& rhs) {
// L(lhs) bit return
if (rhs.isFourState()) return setAllBitsX();
uint32_t rhsval = rhs.toUInt();
setZero();
uint32_t rhsval = rhs.toUInt();
for (int bit=0; bit<this->width(); bit++) {
if (bit >= (int)rhsval) {
setBit(bit,lhs.bitIs(bit - rhsval));
@@ -1051,6 +1075,15 @@ V3Number& V3Number::opShiftL (const V3Number& lhs, const V3Number& rhs) {
//======================================================================
// Ops - Arithmetic
V3Number& V3Number::opAbsS (const V3Number& lhs) {
// op i, L(lhs) bit return
if (lhs.isFourState()) return setAllBitsX();
if (lhs.isNegative()) {
return opUnaryMin(lhs);
} else {
return opAssign(lhs);
}
}
V3Number& V3Number::opUnaryMin (const V3Number& lhs) {
// op i, L(lhs) bit return
if (lhs.isFourState()) return setAllBitsX();