( FSLIT("RET_PPP"), \[a,b,c] -> emitRetUT [(PtrArg,a),(PtrArg,b),(PtrArg,c)]),
( FSLIT("RET_NPP"), \[a,b,c] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(PtrArg,c)]),
( FSLIT("RET_NNP"), \[a,b,c] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(PtrArg,c)]),
+ ( FSLIT("RET_NNN"), \[a,b,c] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,c)]),
( FSLIT("RET_NNNP"), \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(NonPtrArg,b),(NonPtrArg,c),(PtrArg,d)]),
( FSLIT("RET_NPNP"), \[a,b,c,d] -> emitRetUT [(NonPtrArg,a),(PtrArg,b),(NonPtrArg,c),(PtrArg,d)])
represent an {\tt Integer\#} holding the mantissa.}
with out_of_line = True
+primop DoubleDecode_2IntOp "decodeDouble_2Int#" GenPrimOp
+ Double# -> (# Int#, Int#, Int# #)
+ {Convert to arbitrary-precision integer.
+ First {\tt Int\#} in result is the high 32 bits of the mantissa, and the
+ second is the low 32. The third is the exponent.}
+ with out_of_line = True
+
------------------------------------------------------------------------
section "Float#"
{Operations on single-precision (32-bit) floating-point numbers.}
represent an {\tt Integer\#} holding the mantissa.}
with out_of_line = True
+primop FloatDecode_IntOp "decodeFloat_Int#" GenPrimOp
+ Float# -> (# Int#, Int# #)
+ {Convert to arbitrary-precision integer.
+ First {\tt Int\#} in result is the mantissa; second is the exponent.}
+ with out_of_line = True
+
------------------------------------------------------------------------
section "Arrays"
{Operations on {\tt Array\#}.}
extern void __decodeDouble (MP_INT *man, I_ *_exp, StgDouble dbl);
extern void __decodeFloat (MP_INT *man, I_ *_exp, StgFloat flt);
+extern void __decodeDouble_2Int (I_ *man_high, I_ *man_low, I_ *exp, StgDouble dbl);
+extern void __decodeFloat_Int (I_ *man, I_ *exp, StgFloat flt);
#if defined(WANT_DOTNET_SUPPORT)
#include "DNInvoke.h"
/* grimy low-level support functions defined in StgPrimFloat.c */
extern StgDouble __encodeDouble (I_ size, StgByteArray arr, I_ e);
+extern StgDouble __2Int_encodeDouble (I_ j_high, I_ j_low, I_ e);
extern StgDouble __int_encodeDouble (I_ j, I_ e);
extern StgFloat __encodeFloat (I_ size, StgByteArray arr, I_ e);
extern StgFloat __int_encodeFloat (I_ j, I_ e);
RTS_FUN(word2Integerzh_fast);
RTS_FUN(decodeFloatzh_fast);
+RTS_FUN(decodeFloatzuIntzh_fast);
RTS_FUN(decodeDoublezh_fast);
+RTS_FUN(decodeDoublezu2Intzh_fast);
RTS_FUN(andIntegerzh_fast);
RTS_FUN(orIntegerzh_fast);
SymX(addDLL) \
GMP_SYMS \
SymX(__int_encodeDouble) \
+ SymX(__2Int_encodeDouble) \
SymX(__int_encodeFloat) \
SymX(andIntegerzh_fast) \
SymX(atomicallyzh_fast) \
SymX(createAdjustor) \
SymX(decodeDoublezh_fast) \
SymX(decodeFloatzh_fast) \
+ SymX(decodeDoublezu2Intzh_fast) \
+ SymX(decodeFloatzuIntzh_fast) \
SymX(defaultsHook) \
SymX(delayzh_fast) \
SymX(deRefWeakzh_fast) \
RET_NNP(W_[mp_tmp_w], TO_W_(MP_INT__mp_size(mp_tmp1)), p);
}
+decodeFloatzuIntzh_fast
+{
+ W_ p;
+ F_ arg;
+ FETCH_MP_TEMP(mp_tmp1);
+ FETCH_MP_TEMP(mp_tmp_w);
+
+ /* arguments: F1 = Float# */
+ arg = F1;
+
+ /* Perform the operation */
+ foreign "C" __decodeFloat_Int(mp_tmp1 "ptr", mp_tmp_w "ptr", arg) [];
+
+ /* returns: (Int# (mantissa), Int# (exponent)) */
+ RET_NN(W_[mp_tmp1], W_[mp_tmp_w]);
+}
+
#define DOUBLE_MANTISSA_SIZE SIZEOF_DOUBLE
#define ARR_SIZE (SIZEOF_StgArrWords + DOUBLE_MANTISSA_SIZE)
RET_NNP(W_[mp_tmp_w], TO_W_(MP_INT__mp_size(mp_tmp1)), p);
}
+decodeDoublezu2Intzh_fast
+{
+ D_ arg;
+ W_ p;
+ FETCH_MP_TEMP(mp_tmp1);
+ FETCH_MP_TEMP(mp_tmp2);
+ FETCH_MP_TEMP(mp_tmp_w);
+
+ /* arguments: D1 = Double# */
+ arg = D1;
+
+ /* Perform the operation */
+ foreign "C" __decodeDouble_2Int(mp_tmp1 "ptr", mp_tmp2 "ptr", mp_tmp_w "ptr", arg) [];
+
+ /* returns: (Int# (mant high), Int# (mant low), Int# (expn)) */
+ RET_NNN(W_[mp_tmp1], W_[mp_tmp2], W_[mp_tmp_w]);
+}
+
/* -----------------------------------------------------------------------------
* Concurrency primitives
* -------------------------------------------------------------------------- */
return r;
}
+StgDouble
+__2Int_encodeDouble (I_ j_high, I_ j_low, I_ e)
+{
+ StgDouble r;
+
+ /* assuming 32 bit ints */
+ ASSERT(sizeof(int ) == 4 );
+
+ r = (StgDouble)((unsigned int)j_high);
+ r *= exp2f(32);
+ r += (StgDouble)((unsigned int)j_low);
+
+ /* Now raise to the exponent */
+ if ( r != 0.0 ) /* Lennart suggests this avoids a bug in MIPS's ldexp */
+ r = ldexp(r, e);
+
+ /* sign is encoded in the size */
+ if (j_high < 0)
+ r = -r;
+
+ return r;
+}
+
/* Special version for small Integers */
StgDouble
__int_encodeDouble (I_ j, I_ e)
}
void
+__decodeDouble_2Int (I_ *man_high, I_ *man_low, I_ *exp, StgDouble dbl)
+{
+ /* Do some bit fiddling on IEEE */
+ unsigned int low, high; /* assuming 32 bit ints */
+ int sign, iexp;
+ union { double d; unsigned int i[2]; } u; /* assuming 32 bit ints, 64 bit double */
+
+ ASSERT(sizeof(unsigned int ) == 4 );
+ ASSERT(sizeof(dbl ) == 8 );
+ ASSERT(sizeof(dbl ) == SIZEOF_DOUBLE);
+
+ u.d = dbl; /* grab chunks of the double */
+ low = u.i[L];
+ high = u.i[H];
+
+ if (low == 0 && (high & ~DMSBIT) == 0) {
+ *man_low = 0;
+ *man_high = 0;
+ *exp = 0L;
+ } else {
+ iexp = ((high >> 20) & 0x7ff) + MY_DMINEXP;
+ sign = high;
+
+ high &= DHIGHBIT-1;
+ if (iexp != MY_DMINEXP) /* don't add hidden bit to denorms */
+ high |= DHIGHBIT;
+ else {
+ iexp++;
+ /* A denorm, normalize the mantissa */
+ while (! (high & DHIGHBIT)) {
+ high <<= 1;
+ if (low & DMSBIT)
+ high++;
+ low <<= 1;
+ iexp--;
+ }
+ }
+ *exp = (I_) iexp;
+ *man_low = low;
+ *man_high = high;
+ if (sign < 0) {
+ *man_high = - *man_high;
+ }
+ }
+}
+
+void
__decodeFloat (MP_INT *man, I_ *exp, StgFloat flt)
{
/* Do some bit fiddling on IEEE */
based on defs in GNU libc <ieee754.h>
*/
+void
+__decodeFloat_Int (I_ *man, I_ *exp, StgFloat flt)
+{
+ /* Do some bit fiddling on IEEE */
+ int high, sign; /* assuming 32 bit ints */
+ union { float f; int i; } u; /* assuming 32 bit float and int */
+
+ ASSERT(sizeof(int ) == 4 );
+ ASSERT(sizeof(flt ) == 4 );
+ ASSERT(sizeof(flt ) == SIZEOF_FLOAT );
+
+ u.f = flt; /* grab the float */
+ high = u.i;
+
+ if ((high & ~FMSBIT) == 0) {
+ *man = 0;
+ *exp = 0;
+ } else {
+ *exp = ((high >> 23) & 0xff) + MY_FMINEXP;
+ sign = high;
+
+ high &= FHIGHBIT-1;
+ if (*exp != MY_FMINEXP) /* don't add hidden bit to denorms */
+ high |= FHIGHBIT;
+ else {
+ (*exp)++;
+ /* A denorm, normalize the mantissa */
+ while (! (high & FHIGHBIT)) {
+ high <<= 1;
+ (*exp)--;
+ }
+ }
+ *man = high;
+ if (sign < 0)
+ *man = - *man;
+ }
+}
+
union stg_ieee754_flt
{
float f;