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Merge "Quiet SNaN inputs in Half.toFloat()"

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am: a879fd8b02

Change-Id: I9ad4e399a81121ec0e59d8aa1af4cd05866c12cb
This commit is contained in:
xueliang.zhong
2019-01-18 15:38:15 -08:00
committed by android-build-merger
parent e9dc415e2b a879fd8b02
commit fea7e9f20d
1 changed files with 4 additions and 0 deletions
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4
core/java/android/util/Half.java
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@@ -162,6 +162,7 @@ public final class Half extends Number implements Comparable<Half> {
private static final int FP32_EXPONENT_MASK = 0xff;
private static final int FP32_SIGNIFICAND_MASK = 0x7fffff;
private static final int FP32_EXPONENT_BIAS = 127;
private static final int FP32_QNAN_MASK = 0x400000;
private static final int FP32_DENORMAL_MAGIC = 126 << 23;
private static final float FP32_DENORMAL_FLOAT = Float.intBitsToFloat(FP32_DENORMAL_MAGIC);
@@ -903,6 +904,9 @@ public final class Half extends Number implements Comparable<Half> {
outM = m << 13;
if (e == 0x1f) { // Infinite or NaN
outE = 0xff;
if (outM != 0) { // SNaNs are quieted
outM |= FP32_QNAN_MASK;
}
} else {
outE = e - FP16_EXPONENT_BIAS + FP32_EXPONENT_BIAS;
}