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// Copyright 2009 The Go 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 math
// Floor returns the greatest integer value less than or equal to x.
func Floor(x float64) float64 {
if x < 0 {
d, fract := Modf(-x);
if fract != 0.0 {
d = d+1;
}
return -d;
}
d, _ := Modf(x);
return d;
}
// Ceil returns the least integer value greater than or equal to x.
func Ceil(x float64) float64 { return -Floor(-x) }
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