Fix softfloat float->int corner cases

softfloat/f32_to_i32.c

@@ -21,7 +21,6 @@ int_fast32_t f32_to_i32( float32_t a, int_fast8_t roundingMode, bool exact )
     sign = signF32UI( uiA );
     exp = expF32UI( uiA );
     sig = fracF32UI( uiA );
-    if ( ( exp == 0xFF ) && sig ) sign = 0;
     if ( exp ) sig |= 0x00800000;
     sig64 = (uint_fast64_t) sig<<32;
     shiftCount = 0xAF - exp;

softfloat/f32_to_i64.c

@@ -25,7 +25,7 @@ int_fast64_t f32_to_i64( float32_t a, int_fast8_t roundingMode, bool exact )
     shiftCount = 0xBE - exp;
     if ( shiftCount < 0 ) {
         softfloat_raiseFlags( softfloat_flag_invalid );
-        if ( ! sign || ( ( exp == 0xFF ) && sig ) ) {
+        if ( ! sign ) {
             return INT64_C( 0x7FFFFFFFFFFFFFFF );
         }
         return - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1;

softfloat/f64_to_i32.c

@@ -20,7 +20,6 @@ int_fast32_t f64_to_i32( float64_t a, int_fast8_t roundingMode, bool exact )
     sign = signF64UI( uiA );
     exp = expF64UI( uiA );
     sig = fracF64UI( uiA );
-    if ( ( exp == 0x7FF ) && sig ) sign = 0;
     if ( exp ) sig |= UINT64_C( 0x0010000000000000 );
     shiftCount = 0x42C - exp;
     if ( 0 < shiftCount ) sig = softfloat_shift64RightJam( sig, shiftCount );

softfloat/f64_to_i64.c

@@ -28,8 +28,6 @@ int_fast64_t f64_to_i64( float64_t a, int_fast8_t roundingMode, bool exact )
             softfloat_raiseFlags( softfloat_flag_invalid );
             return
                 ! sign
-                    || ( ( exp == 0x7FF )
-                             && ( sig != UINT64_C( 0x0010000000000000 ) ) )
                     ? INT64_C( 0x7FFFFFFFFFFFFFFF )
                     : - INT64_C( 0x7FFFFFFFFFFFFFFF ) - 1;
         }