diff options
| -rw-r--r-- | fpu/softfloat-specialize.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/fpu/softfloat-specialize.h b/fpu/softfloat-specialize.h index 8dcf469ee6..f43f2d0ace 100644 --- a/fpu/softfloat-specialize.h +++ b/fpu/softfloat-specialize.h @@ -168,6 +168,28 @@ static float32 commonNaNToFloat32( commonNaNT a ) | tie-break rule. *----------------------------------------------------------------------------*/ +#if defined(TARGET_ARM) +static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN, + flag aIsLargerSignificand) +{ + /* ARM mandated NaN propagation rules: take the first of: + * 1. A if it is signaling + * 2. B if it is signaling + * 3. A (quiet) + * 4. B (quiet) + * A signaling NaN is always quietened before returning it. + */ + if (aIsSNaN) { + return 0; + } else if (bIsSNaN) { + return 1; + } else if (aIsQNaN) { + return 0; + } else { + return 1; + } +} +#else static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN, flag aIsLargerSignificand) { @@ -197,6 +219,7 @@ static int pickNaN(flag aIsQNaN, flag aIsSNaN, flag bIsQNaN, flag bIsSNaN, return 1; } } +#endif /*---------------------------------------------------------------------------- | Takes two single-precision floating-point values `a' and `b', one of which |