GoToSocial/vendor/modernc.org/mathutil/rat.go
kim ed46224573
Add SQLite support, fix un-thread-safe DB caches, small performance f… (#172)
* Add SQLite support, fix un-thread-safe DB caches, small performance fixes

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

* add SQLite licenses to README

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

* appease the linter, and fix my dumbass-ery

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

* make requested changes

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

* add back comment

Signed-off-by: kim (grufwub) <grufwub@gmail.com>
2021-08-29 16:41:41 +02:00

28 lines
669 B
Go

// Copyright (c) 2014 The mathutil Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package mathutil // import "modernc.org/mathutil"
// QCmpUint32 compares a/b and c/d and returns:
//
// -1 if a/b < c/d
// 0 if a/b == c/d
// +1 if a/b > c/d
//
func QCmpUint32(a, b, c, d uint32) int {
switch x, y := uint64(a)*uint64(d), uint64(b)*uint64(c); {
case x < y:
return -1
case x == y:
return 0
default: // x > y
return 1
}
}
// QScaleUint32 returns a such that a/b >= c/d.
func QScaleUint32(b, c, d uint32) (a uint64) {
return 1 + (uint64(b)*uint64(c))/uint64(d)
}