diff options
Diffstat (limited to 'source/8086-SSE/specialize.h')
| -rw-r--r-- | source/8086-SSE/specialize.h | 41 |
1 files changed, 38 insertions, 3 deletions
diff --git a/source/8086-SSE/specialize.h b/source/8086-SSE/specialize.h index 8a71e46..d2c6b22 100644 --- a/source/8086-SSE/specialize.h +++ b/source/8086-SSE/specialize.h @@ -2,7 +2,7 @@ /*============================================================================ This C header file is part of the SoftFloat IEEE Floating-Point Arithmetic -Package, Release 3a+, by John R. Hauser. +Package, Release 3b, by John R. Hauser. Copyright 2011, 2012, 2013, 2014, 2015, 2016 The Regents of the University of California. All rights reserved. @@ -47,7 +47,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #define init_detectTininess softfloat_tininess_afterRounding /*---------------------------------------------------------------------------- -| The values to return on conversions to 32-bit integer format that raise an +| The values to return on conversions to 32-bit integer formats that raise an | invalid exception. *----------------------------------------------------------------------------*/ #define ui32_fromPosOverflow 0xFFFFFFFF @@ -58,7 +58,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #define i32_fromNaN 0x7FFFFFFF /*---------------------------------------------------------------------------- -| The values to return on conversions to 64-bit integer format that raise an +| The values to return on conversions to 64-bit integer formats that raise an | invalid exception. *----------------------------------------------------------------------------*/ #define ui64_fromPosOverflow UINT64_C( 0xFFFFFFFFFFFFFFFF ) @@ -82,6 +82,41 @@ struct commonNaN { }; /*---------------------------------------------------------------------------- +| The bit pattern for a default generated 16-bit floating-point NaN. +*----------------------------------------------------------------------------*/ +#define defaultNaNF16UI 0xFE00 + +/*---------------------------------------------------------------------------- +| Returns true when 16-bit unsigned integer `uiA' has the bit pattern of a +| 16-bit floating-point signaling NaN. +| Note: This macro evaluates its argument more than once. +*----------------------------------------------------------------------------*/ +#define softfloat_isSigNaNF16UI( uiA ) ((((uiA) & 0x7E00) == 0x7C00) && ((uiA) & 0x01FF)) + +/*---------------------------------------------------------------------------- +| Assuming `uiA' has the bit pattern of a 16-bit floating-point NaN, converts +| this NaN to the common NaN form, and stores the resulting common NaN at the +| location pointed to by `zPtr'. If the NaN is a signaling NaN, the invalid +| exception is raised. +*----------------------------------------------------------------------------*/ +void softfloat_f16UIToCommonNaN( uint_fast16_t uiA, struct commonNaN *zPtr ); + +/*---------------------------------------------------------------------------- +| Converts the common NaN pointed to by `aPtr' into a 16-bit floating-point +| NaN, and returns the bit pattern of this value as an unsigned integer. +*----------------------------------------------------------------------------*/ +uint_fast16_t softfloat_commonNaNToF16UI( const struct commonNaN *aPtr ); + +/*---------------------------------------------------------------------------- +| Interpreting `uiA' and `uiB' as the bit patterns of two 16-bit floating- +| point values, at least one of which is a NaN, returns the bit pattern of +| the combined NaN result. If either `uiA' or `uiB' has the pattern of a +| signaling NaN, the invalid exception is raised. +*----------------------------------------------------------------------------*/ +uint_fast16_t + softfloat_propagateNaNF16UI( uint_fast16_t uiA, uint_fast16_t uiB ); + +/*---------------------------------------------------------------------------- | The bit pattern for a default generated 32-bit floating-point NaN. *----------------------------------------------------------------------------*/ #define defaultNaNF32UI 0xFFC00000 |