Patchwork [v3,6/7] softfloat: Drop [u]int16 types in favor of [u]int_fast16_t

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Submitter Andreas Färber
Date Dec. 18, 2010, 4:25 p.m.
Message ID <1292689531-18763-6-git-send-email-andreas.faerber@web.de>
Download mbox | patch
Permalink /patch/76083/
State New
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Comments

Andreas Färber - Dec. 18, 2010, 4:25 p.m.
AIX already didn't use our definition, so let's start ripping out this one:
As pointed out by Peter Maydell, int16 is currently int on most
supported platforms, so let's replace it with int_fast16_t,
allowing the system to use a wider type if appropriate.

Note that Darwin uses [u]int16_t now, whereas Haiku uses [u]int32_t.

v3:
* Split off. Use [u]int_fast16_t rather than [u]int16_t.

v2:
* Rebased. Fix two new instances of int16.

Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: malc <av1474@comtv.ru>
Signed-off-by: Andreas Färber <andreas.faerber@web.de>
---
 fpu/softfloat-macros.h |   18 ++++----
 fpu/softfloat.c        |  114 ++++++++++++++++++++++++------------------------
 fpu/softfloat.h        |    8 +---
 3 files changed, 68 insertions(+), 72 deletions(-)

Patch

diff --git a/fpu/softfloat-macros.h b/fpu/softfloat-macros.h
index e007039..c9aa2dd 100644
--- a/fpu/softfloat-macros.h
+++ b/fpu/softfloat-macros.h
@@ -39,7 +39,7 @@  these four paragraphs for those parts of this code that are retained.
 | The result is stored in the location pointed to by `zPtr'.
 *----------------------------------------------------------------------------*/
 
-INLINE void shift32RightJamming( uint32_t a, int16 count, uint32_t *zPtr )
+INLINE void shift32RightJamming( uint32_t a, int_fast16_t count, uint32_t *zPtr )
 {
     uint32_t z;
 
@@ -65,7 +65,7 @@  INLINE void shift32RightJamming( uint32_t a, int16 count, uint32_t *zPtr )
 | The result is stored in the location pointed to by `zPtr'.
 *----------------------------------------------------------------------------*/
 
-INLINE void shift64RightJamming( uint64_t a, int16 count, uint64_t *zPtr )
+INLINE void shift64RightJamming( uint64_t a, int_fast16_t count, uint64_t *zPtr )
 {
     uint64_t z;
 
@@ -101,7 +101,7 @@  INLINE void shift64RightJamming( uint64_t a, int16 count, uint64_t *zPtr )
 
 INLINE void
  shift64ExtraRightJamming(
-     uint64_t a0, uint64_t a1, int16 count, uint64_t *z0Ptr, uint64_t *z1Ptr )
+     uint64_t a0, uint64_t a1, int_fast16_t count, uint64_t *z0Ptr, uint64_t *z1Ptr )
 {
     uint64_t z0, z1;
     int8 negCount = ( - count ) & 63;
@@ -138,7 +138,7 @@  INLINE void
 
 INLINE void
  shift128Right(
-     uint64_t a0, uint64_t a1, int16 count, uint64_t *z0Ptr, uint64_t *z1Ptr )
+     uint64_t a0, uint64_t a1, int_fast16_t count, uint64_t *z0Ptr, uint64_t *z1Ptr )
 {
     uint64_t z0, z1;
     int8 negCount = ( - count ) & 63;
@@ -173,7 +173,7 @@  INLINE void
 
 INLINE void
  shift128RightJamming(
-     uint64_t a0, uint64_t a1, int16 count, uint64_t *z0Ptr, uint64_t *z1Ptr )
+     uint64_t a0, uint64_t a1, int_fast16_t count, uint64_t *z0Ptr, uint64_t *z1Ptr )
 {
     uint64_t z0, z1;
     int8 negCount = ( - count ) & 63;
@@ -227,7 +227,7 @@  INLINE void
      uint64_t a0,
      uint64_t a1,
      uint64_t a2,
-     int16 count,
+     int_fast16_t count,
      uint64_t *z0Ptr,
      uint64_t *z1Ptr,
      uint64_t *z2Ptr
@@ -282,7 +282,7 @@  INLINE void
 
 INLINE void
  shortShift128Left(
-     uint64_t a0, uint64_t a1, int16 count, uint64_t *z0Ptr, uint64_t *z1Ptr )
+     uint64_t a0, uint64_t a1, int_fast16_t count, uint64_t *z0Ptr, uint64_t *z1Ptr )
 {
 
     *z1Ptr = a1<<count;
@@ -304,7 +304,7 @@  INLINE void
      uint64_t a0,
      uint64_t a1,
      uint64_t a2,
-     int16 count,
+     int_fast16_t count,
      uint64_t *z0Ptr,
      uint64_t *z1Ptr,
      uint64_t *z2Ptr
@@ -575,7 +575,7 @@  static uint64_t estimateDiv128To64( uint64_t a0, uint64_t a1, uint64_t b )
 | value.
 *----------------------------------------------------------------------------*/
 
-static uint32_t estimateSqrt32( int16 aExp, uint32_t a )
+static uint32_t estimateSqrt32( int_fast16_t aExp, uint32_t a )
 {
     static const uint16_t sqrtOddAdjustments[] = {
         0x0004, 0x0022, 0x005D, 0x00B1, 0x011D, 0x019F, 0x0236, 0x02E0,
diff --git a/fpu/softfloat.c b/fpu/softfloat.c
index 8eaff14..8282750 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -185,7 +185,7 @@  INLINE uint32_t extractFloat32Frac( float32 a )
 | Returns the exponent bits of the single-precision floating-point value `a'.
 *----------------------------------------------------------------------------*/
 
-INLINE int16 extractFloat32Exp( float32 a )
+INLINE int_fast16_t extractFloat32Exp( float32 a )
 {
 
     return ( float32_val(a)>>23 ) & 0xFF;
@@ -211,7 +211,7 @@  INLINE flag extractFloat32Sign( float32 a )
 *----------------------------------------------------------------------------*/
 
 static void
- normalizeFloat32Subnormal( uint32_t aSig, int16 *zExpPtr, uint32_t *zSigPtr )
+ normalizeFloat32Subnormal( uint32_t aSig, int_fast16_t *zExpPtr, uint32_t *zSigPtr )
 {
     int8 shiftCount;
 
@@ -232,7 +232,7 @@  static void
 | significand.
 *----------------------------------------------------------------------------*/
 
-INLINE float32 packFloat32( flag zSign, int16 zExp, uint32_t zSig )
+INLINE float32 packFloat32( flag zSign, int_fast16_t zExp, uint32_t zSig )
 {
 
     return make_float32(
@@ -262,7 +262,7 @@  INLINE float32 packFloat32( flag zSign, int16 zExp, uint32_t zSig )
 | Binary Floating-Point Arithmetic.
 *----------------------------------------------------------------------------*/
 
-static float32 roundAndPackFloat32( flag zSign, int16 zExp, uint32_t zSig STATUS_PARAM)
+static float32 roundAndPackFloat32( flag zSign, int_fast16_t zExp, uint32_t zSig STATUS_PARAM)
 {
     int8 roundingMode;
     flag roundNearestEven;
@@ -325,7 +325,7 @@  static float32 roundAndPackFloat32( flag zSign, int16 zExp, uint32_t zSig STATUS
 *----------------------------------------------------------------------------*/
 
 static float32
- normalizeRoundAndPackFloat32( flag zSign, int16 zExp, uint32_t zSig STATUS_PARAM)
+ normalizeRoundAndPackFloat32( flag zSign, int_fast16_t zExp, uint32_t zSig STATUS_PARAM)
 {
     int8 shiftCount;
 
@@ -349,7 +349,7 @@  INLINE uint64_t extractFloat64Frac( float64 a )
 | Returns the exponent bits of the double-precision floating-point value `a'.
 *----------------------------------------------------------------------------*/
 
-INLINE int16 extractFloat64Exp( float64 a )
+INLINE int_fast16_t extractFloat64Exp( float64 a )
 {
 
     return ( float64_val(a)>>52 ) & 0x7FF;
@@ -375,7 +375,7 @@  INLINE flag extractFloat64Sign( float64 a )
 *----------------------------------------------------------------------------*/
 
 static void
- normalizeFloat64Subnormal( uint64_t aSig, int16 *zExpPtr, uint64_t *zSigPtr )
+ normalizeFloat64Subnormal( uint64_t aSig, int_fast16_t *zExpPtr, uint64_t *zSigPtr )
 {
     int8 shiftCount;
 
@@ -396,7 +396,7 @@  static void
 | significand.
 *----------------------------------------------------------------------------*/
 
-INLINE float64 packFloat64( flag zSign, int16 zExp, uint64_t zSig )
+INLINE float64 packFloat64( flag zSign, int_fast16_t zExp, uint64_t zSig )
 {
 
     return make_float64(
@@ -426,11 +426,11 @@  INLINE float64 packFloat64( flag zSign, int16 zExp, uint64_t zSig )
 | Binary Floating-Point Arithmetic.
 *----------------------------------------------------------------------------*/
 
-static float64 roundAndPackFloat64( flag zSign, int16 zExp, uint64_t zSig STATUS_PARAM)
+static float64 roundAndPackFloat64( flag zSign, int_fast16_t zExp, uint64_t zSig STATUS_PARAM)
 {
     int8 roundingMode;
     flag roundNearestEven;
-    int16 roundIncrement, roundBits;
+    int_fast16_t roundIncrement, roundBits;
     flag isTiny;
 
     roundingMode = STATUS(float_rounding_mode);
@@ -489,7 +489,7 @@  static float64 roundAndPackFloat64( flag zSign, int16 zExp, uint64_t zSig STATUS
 *----------------------------------------------------------------------------*/
 
 static float64
- normalizeRoundAndPackFloat64( flag zSign, int16 zExp, uint64_t zSig STATUS_PARAM)
+ normalizeRoundAndPackFloat64( flag zSign, int_fast16_t zExp, uint64_t zSig STATUS_PARAM)
 {
     int8 shiftCount;
 
@@ -1294,7 +1294,7 @@  float128 int64_to_float128( int64 a STATUS_PARAM )
 int32 float32_to_int32( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint32_t aSig;
     uint64_t aSig64;
 
@@ -1324,7 +1324,7 @@  int32 float32_to_int32( float32 a STATUS_PARAM )
 int32 float32_to_int32_round_to_zero( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint32_t aSig;
     int32 z;
 
@@ -1363,10 +1363,10 @@  int32 float32_to_int32_round_to_zero( float32 a STATUS_PARAM )
 | returned.
 *----------------------------------------------------------------------------*/
 
-int16 float32_to_int16_round_to_zero( float32 a STATUS_PARAM )
+int_fast16_t float32_to_int16_round_to_zero( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint32_t aSig;
     int32 z;
 
@@ -1415,7 +1415,7 @@  int16 float32_to_int16_round_to_zero( float32 a STATUS_PARAM )
 int64 float32_to_int64( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint32_t aSig;
     uint64_t aSig64, aSigExtra;
 
@@ -1451,7 +1451,7 @@  int64 float32_to_int64( float32 a STATUS_PARAM )
 int64 float32_to_int64_round_to_zero( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint32_t aSig;
     uint64_t aSig64;
     int64 z;
@@ -1494,7 +1494,7 @@  int64 float32_to_int64_round_to_zero( float32 a STATUS_PARAM )
 float64 float32_to_float64( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig;
 
     aSig = extractFloat32Frac( a );
@@ -1525,7 +1525,7 @@  float64 float32_to_float64( float32 a STATUS_PARAM )
 floatx80 float32_to_floatx80( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig;
 
     aSig = extractFloat32Frac( a );
@@ -1558,7 +1558,7 @@  floatx80 float32_to_floatx80( float32 a STATUS_PARAM )
 float128 float32_to_float128( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig;
 
     aSig = extractFloat32Frac( a );
@@ -1589,7 +1589,7 @@  float128 float32_to_float128( float32 a STATUS_PARAM )
 float32 float32_round_to_int( float32 a STATUS_PARAM)
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t lastBitMask, roundBitsMask;
     int8 roundingMode;
     uint32_t z;
@@ -1648,9 +1648,9 @@  float32 float32_round_to_int( float32 a STATUS_PARAM)
 
 static float32 addFloat32Sigs( float32 a, float32 b, flag zSign STATUS_PARAM)
 {
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint32_t aSig, bSig, zSig;
-    int16 expDiff;
+    int_fast16_t expDiff;
 
     aSig = extractFloat32Frac( a );
     aExp = extractFloat32Exp( a );
@@ -1722,9 +1722,9 @@  static float32 addFloat32Sigs( float32 a, float32 b, flag zSign STATUS_PARAM)
 
 static float32 subFloat32Sigs( float32 a, float32 b, flag zSign STATUS_PARAM)
 {
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint32_t aSig, bSig, zSig;
-    int16 expDiff;
+    int_fast16_t expDiff;
 
     aSig = extractFloat32Frac( a );
     aExp = extractFloat32Exp( a );
@@ -1838,7 +1838,7 @@  float32 float32_sub( float32 a, float32 b STATUS_PARAM )
 float32 float32_mul( float32 a, float32 b STATUS_PARAM )
 {
     flag aSign, bSign, zSign;
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint32_t aSig, bSig;
     uint64_t zSig64;
     uint32_t zSig;
@@ -1898,7 +1898,7 @@  float32 float32_mul( float32 a, float32 b STATUS_PARAM )
 float32 float32_div( float32 a, float32 b STATUS_PARAM )
 {
     flag aSign, bSign, zSign;
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint32_t aSig, bSig, zSig;
 
     aSig = extractFloat32Frac( a );
@@ -1960,7 +1960,7 @@  float32 float32_div( float32 a, float32 b STATUS_PARAM )
 float32 float32_rem( float32 a, float32 b STATUS_PARAM )
 {
     flag aSign, zSign;
-    int16 aExp, bExp, expDiff;
+    int_fast16_t aExp, bExp, expDiff;
     uint32_t aSig, bSig;
     uint32_t q;
     uint64_t aSig64, bSig64, q64;
@@ -2059,7 +2059,7 @@  float32 float32_rem( float32 a, float32 b STATUS_PARAM )
 float32 float32_sqrt( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, zExp;
+    int_fast16_t aExp, zExp;
     uint32_t aSig, zSig;
     uint64_t rem, term;
 
@@ -2144,7 +2144,7 @@  static const float64 float32_exp2_coefficients[15] =
 float32 float32_exp2( float32 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig;
     float64 r, x, xn;
     int i;
@@ -2191,7 +2191,7 @@  float32 float32_exp2( float32 a STATUS_PARAM )
 float32 float32_log2( float32 a STATUS_PARAM )
 {
     flag aSign, zSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig, zSig, i;
 
     aSig = extractFloat32Frac( a );
@@ -2399,7 +2399,7 @@  int float32_lt_quiet( float32 a, float32 b STATUS_PARAM )
 int32 float64_to_int32( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint64_t aSig;
 
     aSig = extractFloat64Frac( a );
@@ -2426,7 +2426,7 @@  int32 float64_to_int32( float64 a STATUS_PARAM )
 int32 float64_to_int32_round_to_zero( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint64_t aSig, savedASig;
     int32 z;
 
@@ -2469,10 +2469,10 @@  int32 float64_to_int32_round_to_zero( float64 a STATUS_PARAM )
 | returned.
 *----------------------------------------------------------------------------*/
 
-int16 float64_to_int16_round_to_zero( float64 a STATUS_PARAM )
+int_fast16_t float64_to_int16_round_to_zero( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint64_t aSig, savedASig;
     int32 z;
 
@@ -2523,7 +2523,7 @@  int16 float64_to_int16_round_to_zero( float64 a STATUS_PARAM )
 int64 float64_to_int64( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint64_t aSig, aSigExtra;
 
     aSig = extractFloat64Frac( a );
@@ -2565,7 +2565,7 @@  int64 float64_to_int64( float64 a STATUS_PARAM )
 int64 float64_to_int64_round_to_zero( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, shiftCount;
+    int_fast16_t aExp, shiftCount;
     uint64_t aSig;
     int64 z;
 
@@ -2614,7 +2614,7 @@  int64 float64_to_int64_round_to_zero( float64 a STATUS_PARAM )
 float32 float64_to_float32( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t aSig;
     uint32_t zSig;
 
@@ -2646,7 +2646,7 @@  float32 float64_to_float32( float64 a STATUS_PARAM )
 | than the desired result exponent whenever `zSig' is a complete, normalized
 | significand.
 *----------------------------------------------------------------------------*/
-static uint16_t packFloat16(flag zSign, int16 zExp, uint16_t zSig)
+static uint16_t packFloat16(flag zSign, int_fast16_t zExp, uint16_t zSig)
 {
     return (((uint32_t)zSign) << 15) + (((uint32_t)zExp) << 10) + zSig;
 }
@@ -2657,7 +2657,7 @@  static uint16_t packFloat16(flag zSign, int16 zExp, uint16_t zSig)
 float32 float16_to_float32( uint16_t a, flag ieee STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig;
 
     aSign = a >> 15;
@@ -2689,7 +2689,7 @@  float32 float16_to_float32( uint16_t a, flag ieee STATUS_PARAM )
 uint16_t float32_to_float16( float32 a, flag ieee STATUS_PARAM)
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig;
     uint32_t mask;
     uint32_t increment;
@@ -2785,7 +2785,7 @@  uint16_t float32_to_float16( float32 a, flag ieee STATUS_PARAM)
 floatx80 float64_to_floatx80( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t aSig;
 
     aSig = extractFloat64Frac( a );
@@ -2819,7 +2819,7 @@  floatx80 float64_to_floatx80( float64 a STATUS_PARAM )
 float128 float64_to_float128( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t aSig, zSig0, zSig1;
 
     aSig = extractFloat64Frac( a );
@@ -2851,7 +2851,7 @@  float128 float64_to_float128( float64 a STATUS_PARAM )
 float64 float64_round_to_int( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t lastBitMask, roundBitsMask;
     int8 roundingMode;
     uint64_t z;
@@ -2923,9 +2923,9 @@  float64 float64_trunc_to_int( float64 a STATUS_PARAM)
 
 static float64 addFloat64Sigs( float64 a, float64 b, flag zSign STATUS_PARAM )
 {
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint64_t aSig, bSig, zSig;
-    int16 expDiff;
+    int_fast16_t expDiff;
 
     aSig = extractFloat64Frac( a );
     aExp = extractFloat64Exp( a );
@@ -2997,9 +2997,9 @@  static float64 addFloat64Sigs( float64 a, float64 b, flag zSign STATUS_PARAM )
 
 static float64 subFloat64Sigs( float64 a, float64 b, flag zSign STATUS_PARAM )
 {
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint64_t aSig, bSig, zSig;
-    int16 expDiff;
+    int_fast16_t expDiff;
 
     aSig = extractFloat64Frac( a );
     aExp = extractFloat64Exp( a );
@@ -3113,7 +3113,7 @@  float64 float64_sub( float64 a, float64 b STATUS_PARAM )
 float64 float64_mul( float64 a, float64 b STATUS_PARAM )
 {
     flag aSign, bSign, zSign;
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint64_t aSig, bSig, zSig0, zSig1;
 
     aSig = extractFloat64Frac( a );
@@ -3171,7 +3171,7 @@  float64 float64_mul( float64 a, float64 b STATUS_PARAM )
 float64 float64_div( float64 a, float64 b STATUS_PARAM )
 {
     flag aSign, bSign, zSign;
-    int16 aExp, bExp, zExp;
+    int_fast16_t aExp, bExp, zExp;
     uint64_t aSig, bSig, zSig;
     uint64_t rem0, rem1;
     uint64_t term0, term1;
@@ -3241,7 +3241,7 @@  float64 float64_div( float64 a, float64 b STATUS_PARAM )
 float64 float64_rem( float64 a, float64 b STATUS_PARAM )
 {
     flag aSign, zSign;
-    int16 aExp, bExp, expDiff;
+    int_fast16_t aExp, bExp, expDiff;
     uint64_t aSig, bSig;
     uint64_t q, alternateASig;
     int64_t sigMean;
@@ -3325,7 +3325,7 @@  float64 float64_rem( float64 a, float64 b STATUS_PARAM )
 float64 float64_sqrt( float64 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp, zExp;
+    int_fast16_t aExp, zExp;
     uint64_t aSig, zSig, doubleZSig;
     uint64_t rem0, rem1, term0, term1;
 
@@ -3375,7 +3375,7 @@  float64 float64_sqrt( float64 a STATUS_PARAM )
 float64 float64_log2( float64 a STATUS_PARAM )
 {
     flag aSign, zSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t aSig, aSig0, aSig1, zSig, i;
 
     aSig = extractFloat64Frac( a );
@@ -3797,7 +3797,7 @@  float64 floatx80_to_float64( floatx80 a STATUS_PARAM )
 float128 floatx80_to_float128( floatx80 a STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t aSig, zSig0, zSig1;
 
     aSig = extractFloatx80Frac( a );
@@ -5926,7 +5926,7 @@  int float128_compare_quiet( float128 a, float128 b STATUS_PARAM )
 float32 float32_scalbn( float32 a, int n STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint32_t aSig;
 
     aSig = extractFloat32Frac( a );
@@ -5949,7 +5949,7 @@  float32 float32_scalbn( float32 a, int n STATUS_PARAM )
 float64 float64_scalbn( float64 a, int n STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t aSig;
 
     aSig = extractFloat64Frac( a );
@@ -5973,7 +5973,7 @@  float64 float64_scalbn( float64 a, int n STATUS_PARAM )
 floatx80 floatx80_scalbn( floatx80 a, int n STATUS_PARAM )
 {
     flag aSign;
-    int16 aExp;
+    int_fast16_t aExp;
     uint64_t aSig;
 
     aSig = extractFloatx80Frac( a );
diff --git a/fpu/softfloat.h b/fpu/softfloat.h
index c7854ed..d032cd3 100644
--- a/fpu/softfloat.h
+++ b/fpu/softfloat.h
@@ -50,10 +50,6 @@  these four paragraphs for those parts of this code that are retained.
 typedef uint8_t flag;
 typedef uint8_t uint8;
 typedef int8_t int8;
-#ifndef _AIX
-typedef int uint16;
-typedef int int16;
-#endif
 typedef unsigned int uint32;
 typedef signed int int32;
 typedef uint64_t uint64;
@@ -236,7 +232,7 @@  float32 float16_to_float32( uint16_t, flag STATUS_PARAM );
 /*----------------------------------------------------------------------------
 | Software IEC/IEEE single-precision conversion routines.
 *----------------------------------------------------------------------------*/
-int16 float32_to_int16_round_to_zero( float32 STATUS_PARAM );
+int_fast16_t float32_to_int16_round_to_zero( float32 STATUS_PARAM );
 unsigned int float32_to_uint16_round_to_zero( float32 STATUS_PARAM );
 int32 float32_to_int32( float32 STATUS_PARAM );
 int32 float32_to_int32_round_to_zero( float32 STATUS_PARAM );
@@ -314,7 +310,7 @@  INLINE int float32_is_any_nan(float32 a)
 /*----------------------------------------------------------------------------
 | Software IEC/IEEE double-precision conversion routines.
 *----------------------------------------------------------------------------*/
-int16 float64_to_int16_round_to_zero( float64 STATUS_PARAM );
+int_fast16_t float64_to_int16_round_to_zero( float64 STATUS_PARAM );
 unsigned int float64_to_uint16_round_to_zero( float64 STATUS_PARAM );
 int32 float64_to_int32( float64 STATUS_PARAM );
 int32 float64_to_int32_round_to_zero( float64 STATUS_PARAM );