add Go license

core/math/math.odin

@@ -645,6 +645,36 @@ trunc :: proc{
 
 @(require_results)
 round_f16 :: proc "contextless" (x: f16) -> f16 {
+	// origin: Go /src/math/floor.go
+	//
+	// Copyright (c) 2009 The Go Authors. All rights reserved.
+	//
+	// Redistribution and use in source and binary forms, with or without
+	// modification, are permitted provided that the following conditions are
+	// met:
+	//
+	//    * Redistributions of source code must retain the above copyright
+	// notice, this list of conditions and the following disclaimer.
+	//    * Redistributions in binary form must reproduce the above
+	// copyright notice, this list of conditions and the following disclaimer
+	// in the documentation and/or other materials provided with the
+	// distribution.
+	//    * Neither the name of Google Inc. nor the names of its
+	// contributors may be used to endorse or promote products derived from
+	// this software without specific prior written permission.
+	//
+	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+	// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+	// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+	// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+	// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+	// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+	// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+	// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+	// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 	mask  :: F16_MASK
 	shift :: F16_SHIFT
 	bias  :: F16_BIAS
@@ -672,6 +702,36 @@ round_f16 :: proc "contextless" (x: f16) -> f16 {
 
 @(require_results)
 round_f32 :: proc "contextless" (x: f32) -> f32 {
+	// origin: Go /src/math/floor.go
+	//
+	// Copyright (c) 2009 The Go Authors. All rights reserved.
+	//
+	// Redistribution and use in source and binary forms, with or without
+	// modification, are permitted provided that the following conditions are
+	// met:
+	//
+	//    * Redistributions of source code must retain the above copyright
+	// notice, this list of conditions and the following disclaimer.
+	//    * Redistributions in binary form must reproduce the above
+	// copyright notice, this list of conditions and the following disclaimer
+	// in the documentation and/or other materials provided with the
+	// distribution.
+	//    * Neither the name of Google Inc. nor the names of its
+	// contributors may be used to endorse or promote products derived from
+	// this software without specific prior written permission.
+	//
+	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+	// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+	// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+	// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+	// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+	// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+	// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+	// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+	// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 	mask  :: F32_MASK
 	shift :: F32_SHIFT
 	bias  :: F32_BIAS
@@ -699,6 +759,36 @@ round_f32 :: proc "contextless" (x: f32) -> f32 {
 
 @(require_results)
 round_f64 :: proc "contextless" (x: f64) -> f64 {
+	// origin: Go /src/math/floor.go
+	//
+	// Copyright (c) 2009 The Go Authors. All rights reserved.
+	//
+	// Redistribution and use in source and binary forms, with or without
+	// modification, are permitted provided that the following conditions are
+	// met:
+	//
+	//    * Redistributions of source code must retain the above copyright
+	// notice, this list of conditions and the following disclaimer.
+	//    * Redistributions in binary form must reproduce the above
+	// copyright notice, this list of conditions and the following disclaimer
+	// in the documentation and/or other materials provided with the
+	// distribution.
+	//    * Neither the name of Google Inc. nor the names of its
+	// contributors may be used to endorse or promote products derived from
+	// this software without specific prior written permission.
+	//
+	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+	// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+	// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+	// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+	// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+	// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+	// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+	// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+	// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
 	mask  :: F64_MASK
 	shift :: F64_SHIFT
 	bias  :: F64_BIAS
@@ -2396,4 +2486,4 @@ INF_F64     :: f64(0h7FF0_0000_0000_0000)
 NEG_INF_F64 :: f64(0hFFF0_0000_0000_0000)
 
 SNAN_F64    :: f64(0h7FF0_0000_0000_0001)
-QNAN_F64    :: f64(0h7FF8_0000_0000_0001)
+QNAN_F64    :: f64(0h7FF8_0000_0000_0001)