Initial commit: Go 1.23 release state

test/fixedbugs/issue17005.go

@@ -0,0 +1,46 @@
+// compile
+
+// Copyright 2016 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.
+
+// This tickles (a version of) the PPC64 back end to
+// emit a BVS instruction.
+
+package foo
+
+type Flag int
+
+const (
+	Identity  Flag = iota - 2 // H is the identity matrix; no rotation is needed.
+	Rescaling                 // H specifies rescaling.
+)
+
+type DrotmParams struct {
+	Flag
+}
+
+func Drotmg(d1, d2, x1, y1 float64) (p DrotmParams, rd1, rd2, rx1 float64) {
+
+	const (
+		gam    = 4.0
+		gamsq  = 16.0
+		rgamsq = 5e-8
+	)
+
+	if d1 < 0 {
+		p.Flag = Rescaling
+		return
+	}
+
+	for rd1 <= rgamsq || rd1 >= gamsq {
+		if rd1 <= rgamsq {
+			rd1 *= gam * gam
+			rx1 /= gam
+		} else {
+			rd1 /= gam * gam
+			rx1 *= gam
+		}
+	}
+	return
+}