From c069d117594d72159157aa48d0693d8571be45c5 Mon Sep 17 00:00:00 2001
From: Valentin Rothberg <rothberg@redhat.com>
Date: Thu, 21 Feb 2019 11:54:04 +0100
Subject: vendor containers/image v1.4

This requires some additional changes to the dependencies since the
progress-bar library has been changed to github.com/vbauerster/mpb.

Please refer to the following link for the release notes:
https://github.com/containers/image/releases/tag/v1.4

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
---
 vendor/github.com/vbauerster/mpb/internal/round.go | 49 ++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 vendor/github.com/vbauerster/mpb/internal/round.go

(limited to 'vendor/github.com/vbauerster/mpb/internal/round.go')

diff --git a/vendor/github.com/vbauerster/mpb/internal/round.go b/vendor/github.com/vbauerster/mpb/internal/round.go
new file mode 100644
index 000000000..c54a789d2
--- /dev/null
+++ b/vendor/github.com/vbauerster/mpb/internal/round.go
@@ -0,0 +1,49 @@
+package internal
+
+import "math"
+
+const (
+	uvone    = 0x3FF0000000000000
+	mask     = 0x7FF
+	shift    = 64 - 11 - 1
+	bias     = 1023
+	signMask = 1 << 63
+	fracMask = 1<<shift - 1
+)
+
+// Round returns the nearest integer, rounding half away from zero.
+//
+// Special cases are:
+//	Round(±0) = ±0
+//	Round(±Inf) = ±Inf
+//	Round(NaN) = NaN
+func Round(x float64) float64 {
+	// Round is a faster implementation of:
+	//
+	// func Round(x float64) float64 {
+	//   t := Trunc(x)
+	//   if Abs(x-t) >= 0.5 {
+	//     return t + Copysign(1, x)
+	//   }
+	//   return t
+	// }
+	bits := math.Float64bits(x)
+	e := uint(bits>>shift) & mask
+	if e < bias {
+		// Round abs(x) < 1 including denormals.
+		bits &= signMask // +-0
+		if e == bias-1 {
+			bits |= uvone // +-1
+		}
+	} else if e < bias+shift {
+		// Round any abs(x) >= 1 containing a fractional component [0,1).
+		//
+		// Numbers with larger exponents are returned unchanged since they
+		// must be either an integer, infinity, or NaN.
+		const half = 1 << (shift - 1)
+		e -= bias
+		bits += half >> e
+		bits &^= fracMask >> e
+	}
+	return math.Float64frombits(bits)
+}
-- 
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