Fix unused-variable warnings in softfloat

softfloat/specialize.h

@@ -111,7 +111,7 @@ struct commonNaN { char _unused; };
 | location pointed to by `zPtr'.  If the NaN is a signaling NaN, the invalid
 | exception is raised.
 *----------------------------------------------------------------------------*/
-#define softfloat_f16UIToCommonNaN( uiA, zPtr ) if ( ! ((uiA) & 0x0200) ) softfloat_raiseFlags( softfloat_flag_invalid )
+#define softfloat_f16UIToCommonNaN( uiA, zPtr ) if ( ! ((uiA) & 0x0200) ) (void) (zPtr), softfloat_raiseFlags( softfloat_flag_invalid )
 
 /*----------------------------------------------------------------------------
 | Converts the common NaN pointed to by `aPtr' into a 16-bit floating-point
@@ -146,7 +146,7 @@ uint_fast16_t
 | location pointed to by `zPtr'.  If the NaN is a signaling NaN, the invalid
 | exception is raised.
 *----------------------------------------------------------------------------*/
-#define softfloat_f32UIToCommonNaN( uiA, zPtr ) if ( ! ((uiA) & 0x00400000) ) softfloat_raiseFlags( softfloat_flag_invalid )
+#define softfloat_f32UIToCommonNaN( uiA, zPtr ) if ( ! ((uiA) & 0x00400000) ) (void) (zPtr), softfloat_raiseFlags( softfloat_flag_invalid )
 
 /*----------------------------------------------------------------------------
 | Converts the common NaN pointed to by `aPtr' into a 32-bit floating-point
@@ -181,7 +181,7 @@ uint_fast32_t
 | location pointed to by `zPtr'.  If the NaN is a signaling NaN, the invalid
 | exception is raised.
 *----------------------------------------------------------------------------*/
-#define softfloat_f64UIToCommonNaN( uiA, zPtr ) if ( ! ((uiA) & UINT64_C( 0x0008000000000000 )) ) softfloat_raiseFlags( softfloat_flag_invalid )
+#define softfloat_f64UIToCommonNaN( uiA, zPtr ) if ( ! ((uiA) & UINT64_C( 0x0008000000000000 )) ) (void) (zPtr), softfloat_raiseFlags( softfloat_flag_invalid )
 
 /*----------------------------------------------------------------------------
 | Converts the common NaN pointed to by `aPtr' into a 64-bit floating-point
@@ -287,7 +287,7 @@ struct uint128
 | pointed to by `zPtr'.  If the NaN is a signaling NaN, the invalid exception
 | is raised.
 *----------------------------------------------------------------------------*/
-#define softfloat_f128UIToCommonNaN( uiA64, uiA0, zPtr ) if ( ! ((uiA64) & UINT64_C( 0x0000800000000000 )) ) softfloat_raiseFlags( softfloat_flag_invalid )
+#define softfloat_f128UIToCommonNaN( uiA64, uiA0, zPtr ) if ( ! ((uiA64) & UINT64_C( 0x0000800000000000 )) ) (void) (zPtr), softfloat_raiseFlags( softfloat_flag_invalid )
 
 /*----------------------------------------------------------------------------
 | Converts the common NaN pointed to by `aPtr' into a 128-bit floating-point