113 lines
5.1 KiB
Java
113 lines
5.1 KiB
Java
/*
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8302976
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* @summary Verify conversion between float and the binary16 format
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* @requires (vm.cpu.features ~= ".*avx512vl.*" | vm.cpu.features ~= ".*f16c.*") | os.arch == "aarch64"
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* | (os.arch == "riscv64" & vm.cpu.features ~= ".*zfh,.*")
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* @requires vm.compiler1.enabled & vm.compiler2.enabled
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* @requires vm.compMode != "Xcomp"
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* @comment default run:
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* @run main TestAllFloat16ToFloat
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* @comment disable intrinsics:
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* @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:DisableIntrinsic=_float16ToFloat,_floatToFloat16 TestAllFloat16ToFloat
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* @comment eager JIT compilation:
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* @run main/othervm -XX:CompileCommand=compileonly,TestAllFloat16ToFloat::test* -Xbatch TestAllFloat16ToFloat
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* @comment C2 JIT compilation only:
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* @run main/othervm -XX:CompileCommand=compileonly,TestAllFloat16ToFloat::test* -Xbatch -XX:-TieredCompilation TestAllFloat16ToFloat
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* @comment C1 JIT compilation only:
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* @run main/othervm -XX:CompileCommand=compileonly,TestAllFloat16ToFloat::test* -Xbatch -XX:TieredStopAtLevel=1 TestAllFloat16ToFloat
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*/
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public class TestAllFloat16ToFloat {
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public static short testFloatToFloat16(float f) {
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return Float.floatToFloat16(f);
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}
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public static float testFloat16ToFloat(short s) {
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return Float.float16ToFloat(s);
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}
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public static short testRoundTrip(short s) {
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return Float.floatToFloat16(Float.float16ToFloat(s));
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}
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public static int verify(short sVal, float fVal, short sRes, String prefix) {
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int errors = 0;
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if (sRes != sVal) {
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if (!Float.isNaN(fVal) || ((sRes & ~0x0200) != (sVal & ~0x0200)) ) {
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errors++;
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String fVal_hex = Integer.toHexString(Float.floatToRawIntBits(fVal));
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String sRes_hex = Integer.toHexString(sRes & 0xffff);
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String sVal_hex = Integer.toHexString(sVal & 0xffff);
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System.out.println(prefix + "Inconsistent result for Float.floatToFloat16(" + fVal + "/" + fVal_hex + "): " +
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sRes_hex + "(" + sRes + ")" + " != " + sVal_hex + "(" + sVal + ")");
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}
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}
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return errors;
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}
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public static int run() {
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int errors = 0;
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// Testing all float16 values.
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for (short sVal = Short.MIN_VALUE; sVal < Short.MAX_VALUE; ++sVal) {
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float fVal = Float.float16ToFloat(sVal);
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short sRes = testFloatToFloat16(fVal);
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errors += verify(sVal, fVal, sRes, "testFloatToFloat16: ");
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float fRes = testFloat16ToFloat(sVal);
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if (!Float.isNaN(fRes) && fRes != fVal) {
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errors++;
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String sVal_hex = Integer.toHexString(sVal & 0xffff);
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String fRes_hex = Integer.toHexString(Float.floatToRawIntBits(fRes));
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String fVal_hex = Integer.toHexString(Float.floatToRawIntBits(fVal));
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System.out.println("Non-NaN res: " + "Inconsistent result for Float.float16ToFloat(" + sVal_hex + "): " +
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fRes + "/" + fRes_hex + " != " + fVal + "/" + fVal_hex);
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}
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sRes = testRoundTrip(sVal);
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errors += verify(sVal, fVal, sRes, "testRoundTrip: ");
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if (Float.floatToFloat16(fRes) != Float.floatToFloat16(fVal)) {
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errors++;
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String sVal_hex = Integer.toHexString(sVal & 0xffff);
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String sfRes_hex = Integer.toHexString(Float.floatToFloat16(fRes) & 0xffff);
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String sfVal_hex = Integer.toHexString(Float.floatToFloat16(fVal) & 0xffff);
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System.out.println("Float16 not equal: " + "Inconsistent result for Float.float16ToFloat(" + sVal_hex + "): " +
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sfRes_hex + " != " + sfVal_hex);
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}
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}
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return errors;
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}
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public static void main(String[] args) {
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int errors = 0;
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// Run twice to trigger compilation
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for (int i = 0; i < 2; i++) {
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errors += run();
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}
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if (errors > 0) {
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throw new RuntimeException(errors + " errors");
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}
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}
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}
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