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[Qemu-devel] [PATCH 3/4] fpu: Use plain 'int' rather than 'int_fast16_t'
|
From: |
Peter Maydell |
|
Subject: |
[Qemu-devel] [PATCH 3/4] fpu: Use plain 'int' rather than 'int_fast16_t' for exponents |
|
Date: |
Tue, 26 Jan 2016 11:30:05 +0000 |
Use the plain 'int' type rather than 'int_fast16_t' for handling
exponents. Exponents don't need to be exactly 16 bits, so using int16_t
for them would confuse more than it clarified.
This should be a safe change because int_fast16_t semantics
permit use of 'int' (and on 32-bit glibc that is what you get).
Signed-off-by: Peter Maydell <address@hidden>
---
fpu/softfloat-macros.h | 2 +-
fpu/softfloat.c | 122 ++++++++++++++++++++++++-------------------------
2 files changed, 62 insertions(+), 62 deletions(-)
diff --git a/fpu/softfloat-macros.h b/fpu/softfloat-macros.h
index 51947ef..9cc6158 100644
--- a/fpu/softfloat-macros.h
+++ b/fpu/softfloat-macros.h
@@ -635,7 +635,7 @@ static uint64_t estimateDiv128To64( uint64_t a0, uint64_t
a1, uint64_t b )
| value.
*----------------------------------------------------------------------------*/
-static uint32_t estimateSqrt32(int_fast16_t aExp, uint32_t a)
+static uint32_t estimateSqrt32(int 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 89e6fd9..02a279c 100644
--- a/fpu/softfloat.c
+++ b/fpu/softfloat.c
@@ -119,7 +119,7 @@ static inline uint32_t extractFloat16Frac(float16 a)
| Returns the exponent bits of the half-precision floating-point value `a'.
*----------------------------------------------------------------------------*/
-static inline int_fast16_t extractFloat16Exp(float16 a)
+static inline int extractFloat16Exp(float16 a)
{
return (float16_val(a) >> 10) & 0x1f;
}
@@ -315,7 +315,7 @@ static inline uint32_t extractFloat32Frac( float32 a )
| Returns the exponent bits of the single-precision floating-point value `a'.
*----------------------------------------------------------------------------*/
-static inline int_fast16_t extractFloat32Exp(float32 a)
+static inline int extractFloat32Exp(float32 a)
{
return ( float32_val(a)>>23 ) & 0xFF;
@@ -356,7 +356,7 @@ float32 float32_squash_input_denormal(float32 a,
float_status *status)
*----------------------------------------------------------------------------*/
static void
- normalizeFloat32Subnormal(uint32_t aSig, int_fast16_t *zExpPtr, uint32_t
*zSigPtr)
+ normalizeFloat32Subnormal(uint32_t aSig, int *zExpPtr, uint32_t *zSigPtr)
{
int8_t shiftCount;
@@ -377,7 +377,7 @@ static void
| significand.
*----------------------------------------------------------------------------*/
-static inline float32 packFloat32(flag zSign, int_fast16_t zExp, uint32_t zSig)
+static inline float32 packFloat32(flag zSign, int zExp, uint32_t zSig)
{
return make_float32(
@@ -407,7 +407,7 @@ static inline float32 packFloat32(flag zSign, int_fast16_t
zExp, uint32_t zSig)
| Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
-static float32 roundAndPackFloat32(flag zSign, int_fast16_t zExp, uint32_t
zSig,
+static float32 roundAndPackFloat32(flag zSign, int zExp, uint32_t zSig,
float_status *status)
{
int8_t roundingMode;
@@ -482,7 +482,7 @@ static float32 roundAndPackFloat32(flag zSign, int_fast16_t
zExp, uint32_t zSig,
*----------------------------------------------------------------------------*/
static float32
- normalizeRoundAndPackFloat32(flag zSign, int_fast16_t zExp, uint32_t zSig,
+ normalizeRoundAndPackFloat32(flag zSign, int zExp, uint32_t zSig,
float_status *status)
{
int8_t shiftCount;
@@ -508,7 +508,7 @@ static inline uint64_t extractFloat64Frac( float64 a )
| Returns the exponent bits of the double-precision floating-point value `a'.
*----------------------------------------------------------------------------*/
-static inline int_fast16_t extractFloat64Exp(float64 a)
+static inline int extractFloat64Exp(float64 a)
{
return ( float64_val(a)>>52 ) & 0x7FF;
@@ -549,7 +549,7 @@ float64 float64_squash_input_denormal(float64 a,
float_status *status)
*----------------------------------------------------------------------------*/
static void
- normalizeFloat64Subnormal(uint64_t aSig, int_fast16_t *zExpPtr, uint64_t
*zSigPtr)
+ normalizeFloat64Subnormal(uint64_t aSig, int *zExpPtr, uint64_t *zSigPtr)
{
int8_t shiftCount;
@@ -570,7 +570,7 @@ static void
| significand.
*----------------------------------------------------------------------------*/
-static inline float64 packFloat64(flag zSign, int_fast16_t zExp, uint64_t zSig)
+static inline float64 packFloat64(flag zSign, int zExp, uint64_t zSig)
{
return make_float64(
@@ -600,12 +600,12 @@ static inline float64 packFloat64(flag zSign,
int_fast16_t zExp, uint64_t zSig)
| Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
-static float64 roundAndPackFloat64(flag zSign, int_fast16_t zExp, uint64_t
zSig,
+static float64 roundAndPackFloat64(flag zSign, int zExp, uint64_t zSig,
float_status *status)
{
int8_t roundingMode;
flag roundNearestEven;
- int_fast16_t roundIncrement, roundBits;
+ int roundIncrement, roundBits;
flag isTiny;
roundingMode = status->float_rounding_mode;
@@ -674,7 +674,7 @@ static float64 roundAndPackFloat64(flag zSign, int_fast16_t
zExp, uint64_t zSig,
*----------------------------------------------------------------------------*/
static float64
- normalizeRoundAndPackFloat64(flag zSign, int_fast16_t zExp, uint64_t zSig,
+ normalizeRoundAndPackFloat64(flag zSign, int zExp, uint64_t zSig,
float_status *status)
{
int8_t shiftCount;
@@ -1544,7 +1544,7 @@ float128 uint64_to_float128(uint64_t a, float_status
*status)
int32_t float32_to_int32(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint32_t aSig;
uint64_t aSig64;
@@ -1576,7 +1576,7 @@ int32_t float32_to_int32(float32 a, float_status *status)
int32_t float32_to_int32_round_to_zero(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint32_t aSig;
int32_t z;
@@ -1622,7 +1622,7 @@ int32_t float32_to_int32_round_to_zero(float32 a,
float_status *status)
int16_t float32_to_int16_round_to_zero(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint32_t aSig;
int32_t z;
@@ -1672,7 +1672,7 @@ int16_t float32_to_int16_round_to_zero(float32 a,
float_status *status)
int64_t float32_to_int64(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint32_t aSig;
uint64_t aSig64, aSigExtra;
@@ -1712,7 +1712,7 @@ int64_t float32_to_int64(float32 a, float_status *status)
uint64_t float32_to_uint64(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint32_t aSig;
uint64_t aSig64, aSigExtra;
@@ -1777,7 +1777,7 @@ uint64_t float32_to_uint64_round_to_zero(float32 a,
float_status *status)
int64_t float32_to_int64_round_to_zero(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint32_t aSig;
uint64_t aSig64;
@@ -1824,7 +1824,7 @@ int64_t float32_to_int64_round_to_zero(float32 a,
float_status *status)
float64 float32_to_float64(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig;
a = float32_squash_input_denormal(a, status);
@@ -1856,7 +1856,7 @@ float64 float32_to_float64(float32 a, float_status
*status)
floatx80 float32_to_floatx80(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig;
a = float32_squash_input_denormal(a, status);
@@ -1888,7 +1888,7 @@ floatx80 float32_to_floatx80(float32 a, float_status
*status)
float128 float32_to_float128(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig;
a = float32_squash_input_denormal(a, status);
@@ -1920,7 +1920,7 @@ float128 float32_to_float128(float32 a, float_status
*status)
float32 float32_round_to_int(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t lastBitMask, roundBitsMask;
uint32_t z;
a = float32_squash_input_denormal(a, status);
@@ -2002,9 +2002,9 @@ float32 float32_round_to_int(float32 a, float_status
*status)
static float32 addFloat32Sigs(float32 a, float32 b, flag zSign,
float_status *status)
{
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint32_t aSig, bSig, zSig;
- int_fast16_t expDiff;
+ int expDiff;
aSig = extractFloat32Frac( a );
aExp = extractFloat32Exp( a );
@@ -2088,9 +2088,9 @@ static float32 addFloat32Sigs(float32 a, float32 b, flag
zSign,
static float32 subFloat32Sigs(float32 a, float32 b, flag zSign,
float_status *status)
{
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint32_t aSig, bSig, zSig;
- int_fast16_t expDiff;
+ int expDiff;
aSig = extractFloat32Frac( a );
aExp = extractFloat32Exp( a );
@@ -2214,7 +2214,7 @@ float32 float32_sub(float32 a, float32 b, float_status
*status)
float32 float32_mul(float32 a, float32 b, float_status *status)
{
flag aSign, bSign, zSign;
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint32_t aSig, bSig;
uint64_t zSig64;
uint32_t zSig;
@@ -2279,7 +2279,7 @@ float32 float32_mul(float32 a, float32 b, float_status
*status)
float32 float32_div(float32 a, float32 b, float_status *status)
{
flag aSign, bSign, zSign;
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint32_t aSig, bSig, zSig;
a = float32_squash_input_denormal(a, status);
b = float32_squash_input_denormal(b, status);
@@ -2349,7 +2349,7 @@ float32 float32_div(float32 a, float32 b, float_status
*status)
float32 float32_rem(float32 a, float32 b, float_status *status)
{
flag aSign, zSign;
- int_fast16_t aExp, bExp, expDiff;
+ int aExp, bExp, expDiff;
uint32_t aSig, bSig;
uint32_t q;
uint64_t aSig64, bSig64, q64;
@@ -2457,7 +2457,7 @@ float32 float32_muladd(float32 a, float32 b, float32 c,
int flags,
float_status *status)
{
flag aSign, bSign, cSign, zSign;
- int_fast16_t aExp, bExp, cExp, pExp, zExp, expDiff;
+ int aExp, bExp, cExp, pExp, zExp, expDiff;
uint32_t aSig, bSig, cSig;
flag pInf, pZero, pSign;
uint64_t pSig64, cSig64, zSig64;
@@ -2677,7 +2677,7 @@ float32 float32_muladd(float32 a, float32 b, float32 c,
int flags,
float32 float32_sqrt(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp, zExp;
+ int aExp, zExp;
uint32_t aSig, zSig;
uint64_t rem, term;
a = float32_squash_input_denormal(a, status);
@@ -2765,7 +2765,7 @@ static const float64 float32_exp2_coefficients[15] =
float32 float32_exp2(float32 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig;
float64 r, x, xn;
int i;
@@ -2815,7 +2815,7 @@ float32 float32_exp2(float32 a, float_status *status)
float32 float32_log2(float32 a, float_status *status)
{
flag aSign, zSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig, zSig, i;
a = float32_squash_input_denormal(a, status);
@@ -3082,7 +3082,7 @@ int float32_unordered_quiet(float32 a, float32 b,
float_status *status)
int32_t float64_to_int32(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint64_t aSig;
a = float64_squash_input_denormal(a, status);
@@ -3111,7 +3111,7 @@ int32_t float64_to_int32(float64 a, float_status *status)
int32_t float64_to_int32_round_to_zero(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint64_t aSig, savedASig;
int32_t z;
@@ -3161,7 +3161,7 @@ int32_t float64_to_int32_round_to_zero(float64 a,
float_status *status)
int16_t float64_to_int16_round_to_zero(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint64_t aSig, savedASig;
int32_t z;
@@ -3213,7 +3213,7 @@ int16_t float64_to_int16_round_to_zero(float64 a,
float_status *status)
int64_t float64_to_int64(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint64_t aSig, aSigExtra;
a = float64_squash_input_denormal(a, status);
@@ -3257,7 +3257,7 @@ int64_t float64_to_int64(float64 a, float_status *status)
int64_t float64_to_int64_round_to_zero(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint64_t aSig;
int64_t z;
@@ -3310,7 +3310,7 @@ int64_t float64_to_int64_round_to_zero(float64 a,
float_status *status)
float32 float64_to_float32(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint64_t aSig;
uint32_t zSig;
a = float64_squash_input_denormal(a, status);
@@ -3345,7 +3345,7 @@ float32 float64_to_float32(float64 a, float_status
*status)
| than the desired result exponent whenever `zSig' is a complete, normalized
| significand.
*----------------------------------------------------------------------------*/
-static float16 packFloat16(flag zSign, int_fast16_t zExp, uint16_t zSig)
+static float16 packFloat16(flag zSign, int zExp, uint16_t zSig)
{
return make_float16(
(((uint32_t)zSign) << 15) + (((uint32_t)zExp) << 10) + zSig);
@@ -3379,7 +3379,7 @@ static float16 packFloat16(flag zSign, int_fast16_t zExp,
uint16_t zSig)
| Binary Floating-Point Arithmetic.
*----------------------------------------------------------------------------*/
-static float16 roundAndPackFloat16(flag zSign, int_fast16_t zExp,
+static float16 roundAndPackFloat16(flag zSign, int zExp,
uint32_t zSig, flag ieee,
float_status *status)
{
@@ -3466,7 +3466,7 @@ static float16 roundAndPackFloat16(flag zSign,
int_fast16_t zExp,
return packFloat16(zSign, zExp, zSig >> 13);
}
-static void normalizeFloat16Subnormal(uint32_t aSig, int_fast16_t *zExpPtr,
+static void normalizeFloat16Subnormal(uint32_t aSig, int *zExpPtr,
uint32_t *zSigPtr)
{
int8_t shiftCount = countLeadingZeros32(aSig) - 21;
@@ -3480,7 +3480,7 @@ static void normalizeFloat16Subnormal(uint32_t aSig,
int_fast16_t *zExpPtr,
float32 float16_to_float32(float16 a, flag ieee, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig;
aSign = extractFloat16Sign(a);
@@ -3507,7 +3507,7 @@ float32 float16_to_float32(float16 a, flag ieee,
float_status *status)
float16 float32_to_float16(float32 a, flag ieee, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig;
a = float32_squash_input_denormal(a, status);
@@ -3551,7 +3551,7 @@ float16 float32_to_float16(float32 a, flag ieee,
float_status *status)
float64 float16_to_float64(float16 a, flag ieee, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint32_t aSig;
aSign = extractFloat16Sign(a);
@@ -3579,7 +3579,7 @@ float64 float16_to_float64(float16 a, flag ieee,
float_status *status)
float16 float64_to_float16(float64 a, flag ieee, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint64_t aSig;
uint32_t zSig;
@@ -3633,7 +3633,7 @@ float16 float64_to_float16(float64 a, flag ieee,
float_status *status)
floatx80 float64_to_floatx80(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint64_t aSig;
a = float64_squash_input_denormal(a, status);
@@ -3666,7 +3666,7 @@ floatx80 float64_to_floatx80(float64 a, float_status
*status)
float128 float64_to_float128(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint64_t aSig, zSig0, zSig1;
a = float64_squash_input_denormal(a, status);
@@ -3699,7 +3699,7 @@ float128 float64_to_float128(float64 a, float_status
*status)
float64 float64_round_to_int(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint64_t lastBitMask, roundBitsMask;
uint64_t z;
a = float64_squash_input_denormal(a, status);
@@ -3793,9 +3793,9 @@ float64 float64_trunc_to_int(float64 a, float_status
*status)
static float64 addFloat64Sigs(float64 a, float64 b, flag zSign,
float_status *status)
{
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint64_t aSig, bSig, zSig;
- int_fast16_t expDiff;
+ int expDiff;
aSig = extractFloat64Frac( a );
aExp = extractFloat64Exp( a );
@@ -3879,9 +3879,9 @@ static float64 addFloat64Sigs(float64 a, float64 b, flag
zSign,
static float64 subFloat64Sigs(float64 a, float64 b, flag zSign,
float_status *status)
{
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint64_t aSig, bSig, zSig;
- int_fast16_t expDiff;
+ int expDiff;
aSig = extractFloat64Frac( a );
aExp = extractFloat64Exp( a );
@@ -4005,7 +4005,7 @@ float64 float64_sub(float64 a, float64 b, float_status
*status)
float64 float64_mul(float64 a, float64 b, float_status *status)
{
flag aSign, bSign, zSign;
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint64_t aSig, bSig, zSig0, zSig1;
a = float64_squash_input_denormal(a, status);
@@ -4068,7 +4068,7 @@ float64 float64_mul(float64 a, float64 b, float_status
*status)
float64 float64_div(float64 a, float64 b, float_status *status)
{
flag aSign, bSign, zSign;
- int_fast16_t aExp, bExp, zExp;
+ int aExp, bExp, zExp;
uint64_t aSig, bSig, zSig;
uint64_t rem0, rem1;
uint64_t term0, term1;
@@ -4146,7 +4146,7 @@ float64 float64_div(float64 a, float64 b, float_status
*status)
float64 float64_rem(float64 a, float64 b, float_status *status)
{
flag aSign, zSign;
- int_fast16_t aExp, bExp, expDiff;
+ int aExp, bExp, expDiff;
uint64_t aSig, bSig;
uint64_t q, alternateASig;
int64_t sigMean;
@@ -4240,7 +4240,7 @@ float64 float64_muladd(float64 a, float64 b, float64 c,
int flags,
float_status *status)
{
flag aSign, bSign, cSign, zSign;
- int_fast16_t aExp, bExp, cExp, pExp, zExp, expDiff;
+ int aExp, bExp, cExp, pExp, zExp, expDiff;
uint64_t aSig, bSig, cSig;
flag pInf, pZero, pSign;
uint64_t pSig0, pSig1, cSig0, cSig1, zSig0, zSig1;
@@ -4481,7 +4481,7 @@ float64 float64_muladd(float64 a, float64 b, float64 c,
int flags,
float64 float64_sqrt(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp, zExp;
+ int aExp, zExp;
uint64_t aSig, zSig, doubleZSig;
uint64_t rem0, rem1, term0, term1;
a = float64_squash_input_denormal(a, status);
@@ -4534,7 +4534,7 @@ float64 float64_sqrt(float64 a, float_status *status)
float64 float64_log2(float64 a, float_status *status)
{
flag aSign, zSign;
- int_fast16_t aExp;
+ int aExp;
uint64_t aSig, aSig0, aSig1, zSig, i;
a = float64_squash_input_denormal(a, status);
@@ -5017,7 +5017,7 @@ float64 floatx80_to_float64(floatx80 a, float_status
*status)
float128 floatx80_to_float128(floatx80 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
uint64_t aSig, zSig0, zSig1;
aSig = extractFloatx80Frac( a );
@@ -7296,7 +7296,7 @@ uint16_t float64_to_uint16_round_to_zero(float64 a,
float_status *status)
uint64_t float64_to_uint64(float64 a, float_status *status)
{
flag aSign;
- int_fast16_t aExp;
+ int aExp;
int shiftCount;
uint64_t aSig, aSigExtra;
a = float64_squash_input_denormal(a, status);
--
1.9.1