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Use Managed.len in sub, divFloor, and divTrunc too

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This commit is contained in:
Hiroaki Nakamura
2022-07-16 11:46:13 +09:00
parent 0cee8372cf
commit 3e667fd292
1 changed files with 8 additions and 8 deletions
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16
lib/std/math/big/int.zig
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@@ -2719,7 +2719,7 @@ pub const Managed = struct {
///
/// Returns an error if memory could not be allocated.
pub fn sub(r: *Managed, a: *const Managed, b: *const Managed) !void {
try r.ensureCapacity(math.max(a.limbs.len, b.limbs.len) + 1);
try r.ensureCapacity(math.max(a.len(), b.len()) + 1);
var m = r.toMutable();
m.sub(a.toConst(), b.toConst());
r.setMetadata(m.positive, m.len);
@@ -2813,7 +2813,7 @@ pub const Managed = struct {
if (alias_count == 0) {
m.mulWrapNoAlias(a.toConst(), b.toConst(), signedness, bit_count, rma.allocator);
} else {
const limb_count = calcMulWrapLimbsBufferLen(bit_count, a.limbs.len, b.limbs.len, alias_count);
const limb_count = calcMulWrapLimbsBufferLen(bit_count, a.len(), b.len(), alias_count);
const limbs_buffer = try rma.allocator.alloc(Limb, limb_count);
defer rma.allocator.free(limbs_buffer);
m.mulWrap(a.toConst(), b.toConst(), signedness, bit_count, limbs_buffer, rma.allocator);
@@ -2843,11 +2843,11 @@ pub const Managed = struct {
///
/// Returns an error if memory could not be allocated.
pub fn divFloor(q: *Managed, r: *Managed, a: *const Managed, b: *const Managed) !void {
try q.ensureCapacity(a.limbs.len);
try r.ensureCapacity(b.limbs.len);
try q.ensureCapacity(a.len());
try r.ensureCapacity(b.len());
var mq = q.toMutable();
var mr = r.toMutable();
const limbs_buffer = try q.allocator.alloc(Limb, calcDivLimbsBufferLen(a.limbs.len, b.limbs.len));
const limbs_buffer = try q.allocator.alloc(Limb, calcDivLimbsBufferLen(a.len(), b.len()));
defer q.allocator.free(limbs_buffer);
mq.divFloor(&mr, a.toConst(), b.toConst(), limbs_buffer);
q.setMetadata(mq.positive, mq.len);
@@ -2860,11 +2860,11 @@ pub const Managed = struct {
///
/// Returns an error if memory could not be allocated.
pub fn divTrunc(q: *Managed, r: *Managed, a: *const Managed, b: *const Managed) !void {
try q.ensureCapacity(a.limbs.len);
try r.ensureCapacity(b.limbs.len);
try q.ensureCapacity(a.len());
try r.ensureCapacity(b.len());
var mq = q.toMutable();
var mr = r.toMutable();
const limbs_buffer = try q.allocator.alloc(Limb, calcDivLimbsBufferLen(a.limbs.len, b.limbs.len));
const limbs_buffer = try q.allocator.alloc(Limb, calcDivLimbsBufferLen(a.len(), b.len()));
defer q.allocator.free(limbs_buffer);
mq.divTrunc(&mr, a.toConst(), b.toConst(), limbs_buffer);
q.setMetadata(mq.positive, mq.len);