Update SoftFloat

1 files changed, 65 insertions, 14 deletions

diff --git a/softfloat/softfloat.h b/softfloat/softfloat.h
index 45ff0cf..b277281 100644
--- a/softfloat/softfloat.h
+++ b/softfloat/softfloat.h
@@ -2,10 +2,10 @@
 /*============================================================================
 
 This C header file is part of the SoftFloat IEEE Floating-Point Arithmetic
-Package, Release 3a, by John R. Hauser.
+Package, Release 3d, by John R. Hauser.
 
-Copyright 2011, 2012, 2013, 2014 The Regents of the University of California.
-All rights reserved.
+Copyright 2011, 2012, 2013, 2014, 2015, 2016, 2017 The Regents of the
+University of California.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:
@@ -46,40 +46,45 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #ifndef softfloat_h
 #define softfloat_h 1
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #include <stdbool.h>
 #include <stdint.h>
-
 #include "softfloat_types.h"
 
+#ifndef THREAD_LOCAL
+#define THREAD_LOCAL
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*----------------------------------------------------------------------------
 | Software floating-point underflow tininess-detection mode.
 *----------------------------------------------------------------------------*/
-extern uint_fast8_t softfloat_detectTininess;
+extern THREAD_LOCAL uint_fast8_t softfloat_detectTininess;
 enum {
     softfloat_tininess_beforeRounding = 0,
     softfloat_tininess_afterRounding  = 1
 };
 
 /*----------------------------------------------------------------------------
-| Software floating-point rounding mode.
+| Software floating-point rounding mode.  (Mode "odd" is supported only if
+| SoftFloat is compiled with macro 'SOFTFLOAT_ROUND_ODD' defined.)
 *----------------------------------------------------------------------------*/
-extern uint_fast8_t softfloat_roundingMode;
+extern THREAD_LOCAL uint_fast8_t softfloat_roundingMode;
 enum {
     softfloat_round_near_even   = 0,
     softfloat_round_minMag      = 1,
     softfloat_round_min         = 2,
     softfloat_round_max         = 3,
-    softfloat_round_near_maxMag = 4
+    softfloat_round_near_maxMag = 4,
+    softfloat_round_odd         = 5
 };
 
 /*----------------------------------------------------------------------------
 | Software floating-point exception flags.
 *----------------------------------------------------------------------------*/
-extern uint_fast8_t softfloat_exceptionFlags;
+extern THREAD_LOCAL uint_fast8_t softfloat_exceptionFlags;
 enum {
     softfloat_flag_inexact   =  1,
     softfloat_flag_underflow =  2,
@@ -96,6 +101,7 @@ void softfloat_raiseFlags( uint_fast8_t );
 /*----------------------------------------------------------------------------
 | Integer-to-floating-point conversion routines.
 *----------------------------------------------------------------------------*/
+float16_t ui32_to_f16( uint32_t );
 float32_t ui32_to_f32( uint32_t );
 float64_t ui32_to_f64( uint32_t );
 #ifdef SOFTFLOAT_FAST_INT64
@@ -104,6 +110,7 @@ float128_t ui32_to_f128( uint32_t );
 #endif
 void ui32_to_extF80M( uint32_t, extFloat80_t * );
 void ui32_to_f128M( uint32_t, float128_t * );
+float16_t ui64_to_f16( uint64_t );
 float32_t ui64_to_f32( uint64_t );
 float64_t ui64_to_f64( uint64_t );
 #ifdef SOFTFLOAT_FAST_INT64
@@ -112,6 +119,7 @@ float128_t ui64_to_f128( uint64_t );
 #endif
 void ui64_to_extF80M( uint64_t, extFloat80_t * );
 void ui64_to_f128M( uint64_t, float128_t * );
+float16_t i32_to_f16( int32_t );
 float32_t i32_to_f32( int32_t );
 float64_t i32_to_f64( int32_t );
 #ifdef SOFTFLOAT_FAST_INT64
@@ -120,6 +128,7 @@ float128_t i32_to_f128( int32_t );
 #endif
 void i32_to_extF80M( int32_t, extFloat80_t * );
 void i32_to_f128M( int32_t, float128_t * );
+float16_t i64_to_f16( int64_t );
 float32_t i64_to_f32( int64_t );
 float64_t i64_to_f64( int64_t );
 #ifdef SOFTFLOAT_FAST_INT64
@@ -130,6 +139,41 @@ void i64_to_extF80M( int64_t, extFloat80_t * );
 void i64_to_f128M( int64_t, float128_t * );
 
 /*----------------------------------------------------------------------------
+| 16-bit (half-precision) floating-point operations.
+*----------------------------------------------------------------------------*/
+uint_fast32_t f16_to_ui32( float16_t, uint_fast8_t, bool );
+uint_fast64_t f16_to_ui64( float16_t, uint_fast8_t, bool );
+int_fast32_t f16_to_i32( float16_t, uint_fast8_t, bool );
+int_fast64_t f16_to_i64( float16_t, uint_fast8_t, bool );
+uint_fast32_t f16_to_ui32_r_minMag( float16_t, bool );
+uint_fast64_t f16_to_ui64_r_minMag( float16_t, bool );
+int_fast32_t f16_to_i32_r_minMag( float16_t, bool );
+int_fast64_t f16_to_i64_r_minMag( float16_t, bool );
+float32_t f16_to_f32( float16_t );
+float64_t f16_to_f64( float16_t );
+#ifdef SOFTFLOAT_FAST_INT64
+extFloat80_t f16_to_extF80( float16_t );
+float128_t f16_to_f128( float16_t );
+#endif
+void f16_to_extF80M( float16_t, extFloat80_t * );
+void f16_to_f128M( float16_t, float128_t * );
+float16_t f16_roundToInt( float16_t, uint_fast8_t, bool );
+float16_t f16_add( float16_t, float16_t );
+float16_t f16_sub( float16_t, float16_t );
+float16_t f16_mul( float16_t, float16_t );
+float16_t f16_mulAdd( float16_t, float16_t, float16_t );
+float16_t f16_div( float16_t, float16_t );
+float16_t f16_rem( float16_t, float16_t );
+float16_t f16_sqrt( float16_t );
+bool f16_eq( float16_t, float16_t );
+bool f16_le( float16_t, float16_t );
+bool f16_lt( float16_t, float16_t );
+bool f16_eq_signaling( float16_t, float16_t );
+bool f16_le_quiet( float16_t, float16_t );
+bool f16_lt_quiet( float16_t, float16_t );
+bool f16_isSignalingNaN( float16_t );
+
+/*----------------------------------------------------------------------------
 | 32-bit (single-precision) floating-point operations.
 *----------------------------------------------------------------------------*/
 uint_fast32_t f32_to_ui32( float32_t, uint_fast8_t, bool );
@@ -140,6 +184,7 @@ uint_fast32_t f32_to_ui32_r_minMag( float32_t, bool );
 uint_fast64_t f32_to_ui64_r_minMag( float32_t, bool );
 int_fast32_t f32_to_i32_r_minMag( float32_t, bool );
 int_fast64_t f32_to_i64_r_minMag( float32_t, bool );
+float16_t f32_to_f16( float32_t );
 float64_t f32_to_f64( float32_t );
 #ifdef SOFTFLOAT_FAST_INT64
 extFloat80_t f32_to_extF80( float32_t );
@@ -175,6 +220,7 @@ uint_fast32_t f64_to_ui32_r_minMag( float64_t, bool );
 uint_fast64_t f64_to_ui64_r_minMag( float64_t, bool );
 int_fast32_t f64_to_i32_r_minMag( float64_t, bool );
 int_fast64_t f64_to_i64_r_minMag( float64_t, bool );
+float16_t f64_to_f16( float64_t );
 float32_t f64_to_f32( float64_t );
 #ifdef SOFTFLOAT_FAST_INT64
 extFloat80_t f64_to_extF80( float64_t );
@@ -203,7 +249,7 @@ uint_fast16_t f64_classify( float64_t );
 | Rounding precision for 80-bit extended double-precision floating-point.
 | Valid values are 32, 64, and 80.
 *----------------------------------------------------------------------------*/
-extern uint_fast8_t extF80_roundingPrecision;
+extern THREAD_LOCAL uint_fast8_t extF80_roundingPrecision;
 
 /*----------------------------------------------------------------------------
 | 80-bit extended double-precision floating-point operations.
@@ -217,6 +263,7 @@ uint_fast32_t extF80_to_ui32_r_minMag( extFloat80_t, bool );
 uint_fast64_t extF80_to_ui64_r_minMag( extFloat80_t, bool );
 int_fast32_t extF80_to_i32_r_minMag( extFloat80_t, bool );
 int_fast64_t extF80_to_i64_r_minMag( extFloat80_t, bool );
+float16_t extF80_to_f16( extFloat80_t );
 float32_t extF80_to_f32( extFloat80_t );
 float64_t extF80_to_f64( extFloat80_t );
 float128_t extF80_to_f128( extFloat80_t );
@@ -243,6 +290,7 @@ uint_fast32_t extF80M_to_ui32_r_minMag( const extFloat80_t *, bool );
 uint_fast64_t extF80M_to_ui64_r_minMag( const extFloat80_t *, bool );
 int_fast32_t extF80M_to_i32_r_minMag( const extFloat80_t *, bool );
 int_fast64_t extF80M_to_i64_r_minMag( const extFloat80_t *, bool );
+float16_t extF80M_to_f16( const extFloat80_t * );
 float32_t extF80M_to_f32( const extFloat80_t * );
 float64_t extF80M_to_f64( const extFloat80_t * );
 void extF80M_to_f128M( const extFloat80_t *, float128_t * );
@@ -275,6 +323,7 @@ uint_fast32_t f128_to_ui32_r_minMag( float128_t, bool );
 uint_fast64_t f128_to_ui64_r_minMag( float128_t, bool );
 int_fast32_t f128_to_i32_r_minMag( float128_t, bool );
 int_fast64_t f128_to_i64_r_minMag( float128_t, bool );
+float16_t f128_to_f16( float128_t );
 float32_t f128_to_f32( float128_t );
 float64_t f128_to_f64( float128_t );
 extFloat80_t f128_to_extF80( float128_t );
@@ -293,6 +342,7 @@ bool f128_eq_signaling( float128_t, float128_t );
 bool f128_le_quiet( float128_t, float128_t );
 bool f128_lt_quiet( float128_t, float128_t );
 bool f128_isSignalingNaN( float128_t );
+uint_fast16_t f128_classify( float128_t );
 #endif
 uint_fast32_t f128M_to_ui32( const float128_t *, uint_fast8_t, bool );
 uint_fast64_t f128M_to_ui64( const float128_t *, uint_fast8_t, bool );
@@ -302,6 +352,7 @@ uint_fast32_t f128M_to_ui32_r_minMag( const float128_t *, bool );
 uint_fast64_t f128M_to_ui64_r_minMag( const float128_t *, bool );
 int_fast32_t f128M_to_i32_r_minMag( const float128_t *, bool );
 int_fast64_t f128M_to_i64_r_minMag( const float128_t *, bool );
+float16_t f128M_to_f16( const float128_t * );
 float32_t f128M_to_f32( const float128_t * );
 float64_t f128M_to_f64( const float128_t * );
 void f128M_to_extF80M( const float128_t *, extFloat80_t * );