void
mpq_set_ui (MP_RAT *dest, unsigned long int num, unsigned long int den)
{
if (GMP_NUMB_BITS < BITS_PER_ULONG)
{
if (num == 0) /* Canonicalize 0/d to 0/1. */
den = 1;
mpz_set_ui (mpq_numref (dest), num);
mpz_set_ui (mpq_denref (dest), den);
return;
}
if (num == 0)
{
/* Canonicalize 0/n to 0/1. */
den = 1;
SIZ(NUM(dest)) = 0;
}
else
{
PTR(NUM(dest))[0] = num;
SIZ(NUM(dest)) = 1;
}
PTR(DEN(dest))[0] = den;
SIZ(DEN(dest)) = (den != 0);
}
int
_mpq_cmp_si (mpq_srcptr q, long n, unsigned long d)
{
/* need canonical sign to get right result */
ASSERT (SIZ(DEN(q)) > 0);
if (SIZ(NUM(q)) >= 0)
{
if (n >= 0)
return _mpq_cmp_ui (q, n, d); /* >=0 cmp >=0 */
else
return 1; /* >=0 cmp <0 */
}
else
{
if (n >= 0)
return -1; /* <0 cmp >=0 */
else
{
mpq_t qabs;
SIZ(NUM(qabs)) = ABSIZ(NUM(q));
PTR(NUM(qabs)) = PTR(NUM(q));
SIZ(DEN(qabs)) = SIZ(DEN(q));
PTR(DEN(qabs)) = PTR(DEN(q));
return - _mpq_cmp_ui (qabs, NEG_CAST (unsigned long, n), d); /* <0 cmp <0 */
}
}
}
void
mpq_clear (mpq_t m)
{
(*__gmp_free_func) (PTR(NUM(m)),
(size_t) ALLOC(NUM(m)) * GMP_LIMB_BYTES);
(*__gmp_free_func) (PTR(DEN(m)),
(size_t) ALLOC(DEN(m)) * GMP_LIMB_BYTES);
}
void
mpq_clear (MP_RAT *m)
{
(*__gmp_free_func) (PTR(NUM(m)),
ALLOC(NUM(m)) * BYTES_PER_MP_LIMB);
(*__gmp_free_func) (PTR(DEN(m)),
ALLOC(DEN(m)) * BYTES_PER_MP_LIMB);
}
void
mpq_set_den (mpq_ptr dest, mpz_srcptr den)
{
mp_size_t size = SIZ (den);
mp_size_t abs_size = ABS (size);
mp_ptr dp;
dp = MPZ_NEWALLOC (DEN(dest), abs_size);
SIZ(DEN(dest)) = size;
MPN_COPY (dp, PTR(den), abs_size);
}
void ssi_init(ssi_ports_e ssi_index, bool config_fss_pin)
{
if (ssi_index >= SSI_MAX)
return;
SYSCTL_RCGCGPIO_R |= ssi_pins_data[ssi_index].port_clock_enable_bit;
SYSCTL_RCGCSSI_R |= ssi_pins_data[ssi_index].ssi_clock_enable_bit;
AFSEL(ssi_index) |= 1 << ssi_pins_data[ssi_index].clk_pin |
1 << ssi_pins_data[ssi_index].rx_pin |
1 << ssi_pins_data[ssi_index].tx_pin;
DEN(ssi_index) |= 1 << ssi_pins_data[ssi_index].clk_pin |
1 << ssi_pins_data[ssi_index].rx_pin |
1 << ssi_pins_data[ssi_index].tx_pin;
PCTL(ssi_index) &= ~(0xF << ssi_pins_data[ssi_index].clk_pin * 4) &
~(0xF << ssi_pins_data[ssi_index].fss_pin * 4) &
~(0xF << ssi_pins_data[ssi_index].rx_pin * 4) &
~(0xF << ssi_pins_data[ssi_index].tx_pin * 4);
PCTL(ssi_index) |= ssi_pins_data[ssi_index].pmc_setting << ssi_pins_data[ssi_index].clk_pin * 4 |
ssi_pins_data[ssi_index].pmc_setting << ssi_pins_data[ssi_index].rx_pin * 4 |
ssi_pins_data[ssi_index].pmc_setting << ssi_pins_data[ssi_index].tx_pin * 4;
if (config_fss_pin)
{
AFSEL(ssi_index) |= 1 << ssi_pins_data[ssi_index].fss_pin;
DEN(ssi_index) |= 1 << ssi_pins_data[ssi_index].fss_pin;
PCTL(ssi_index) |= ssi_pins_data[ssi_index].pmc_setting << ssi_pins_data[ssi_index].fss_pin * 4;
}
else
{
AFSEL(ssi_index) &= ~(1 << ssi_pins_data[ssi_index].fss_pin);
}
// Disable SSI
SSICR1(ssi_index) &= ~SSI_CR1_SSE;
// SCR = 0; SPH = 0; SPO = 0; FRF = 0 (Freescale SPI); DSS = 7 (8 bits)
SSICR0(ssi_index) = SSI_CR0_DSS_8;
SSICC(ssi_index) = SSI_CC_CS_SYSPLL;
SSICPSR(ssi_index) = 80;
// Enable SSI in master mode
SSICR1(ssi_index) = SSI_CR1_SSE;// | SSI_CR1_LBM;
}
void
mpq_set_z (mpq_ptr dest, mpz_srcptr src)
{
mp_size_t num_size;
mp_size_t abs_num_size;
mp_ptr dp;
num_size = SIZ (src);
abs_num_size = ABS (num_size);
dp = MPZ_NEWALLOC (NUM(dest), abs_num_size);
SIZ(NUM(dest)) = num_size;
MPN_COPY (dp, PTR(src), abs_num_size);
PTR(DEN(dest))[0] = 1;
SIZ(DEN(dest)) = 1;
}
void
mpq_init (mpq_t x)
{
ALLOC(NUM(x)) = 1;
PTR(NUM(x)) = __GMP_ALLOCATE_FUNC_LIMBS (1);
SIZ(NUM(x)) = 0;
ALLOC(DEN(x)) = 1;
PTR(DEN(x)) = __GMP_ALLOCATE_FUNC_LIMBS (1);
PTR(DEN(x))[0] = 1;
SIZ(DEN(x)) = 1;
#ifdef __CHECKER__
/* let the low limb look initialized, for the benefit of mpz_get_ui etc */
PTR(NUM(x))[0] = 0;
#endif
}
void
mpq_init (MP_RAT *x)
{
ALLOC(NUM(x)) = 1;
PTR(NUM(x)) = (mp_ptr) (*__gmp_allocate_func) (BYTES_PER_MP_LIMB);
SIZ(NUM(x)) = 0;
ALLOC(DEN(x)) = 1;
PTR(DEN(x)) = (mp_ptr) (*__gmp_allocate_func) (BYTES_PER_MP_LIMB);
PTR(DEN(x))[0] = 1;
SIZ(DEN(x)) = 1;
#ifdef __CHECKER__
/* let the low limb look initialized, for the benefit of mpz_get_ui etc */
PTR(NUM(x))[0] = 0;
#endif
}
void bs1770_add_sample(bs1770_t *bs1770, double fs, int channels,
bs1770_sample_t sample)
{
biquad_t *pre=&bs1770->pre;
biquad_t *rlb=&bs1770->rlb;
double wssqs=0.0;
double *g=BS1770_G;
int offs, size, i;
int get_tmp;
double den_tmp;
if (bs1770->fs!=fs)
bs1770_set_fs(bs1770, fs, channels);
offs=bs1770->ring.offs;
size=bs1770->ring.size;
for (i=0;i<MIN(channels,BS1770_MAX_CHANNELS);++i) {
double *buf=bs1770->ring.buf[i];
double x=GETX(buf,offs,0)=DEN(sample[i]);
if (1<size) {
double y=GETY(buf,offs,0)=DEN(pre->b0*x
+pre->b1*GETX(buf,offs,-1)+pre->b2*GETX(buf,offs,-2)
-pre->a1*GETY(buf,offs,-1)-pre->a2*GETY(buf,offs,-2))
;
double z=GETZ(buf,offs,0)=DEN(rlb->b0*y
+rlb->b1*GETY(buf,offs,-1)+rlb->b2*GETY(buf,offs,-2)
-rlb->a1*GETZ(buf,offs,-1)-rlb->a2*GETZ(buf,offs,-2))
;
wssqs+=(*g++)*z*z;
++buf;
}
}
if (NULL!=bs1770->lufs)
bs1770_aggr_add_sqs(bs1770->lufs,fs,wssqs);
if (NULL!=bs1770->lra)
bs1770_aggr_add_sqs(bs1770->lra,fs,wssqs);
if (size<2)
++bs1770->ring.size;
if (++bs1770->ring.offs==BS1770_BUF_SIZE)
bs1770->ring.offs=0;
}
void
mpq_set (mpq_ptr dest, mpq_srcptr src)
{
mp_size_t num_size, den_size;
mp_size_t abs_num_size;
mp_ptr dp;
num_size = SIZ(NUM(src));
SIZ(NUM(dest)) = num_size;
abs_num_size = ABS (num_size);
dp = MPZ_NEWALLOC (NUM(dest), abs_num_size);
MPN_COPY (dp, PTR(NUM(src)), abs_num_size);
den_size = SIZ(DEN(src));
SIZ(DEN(dest)) = den_size;
dp = MPZ_NEWALLOC (DEN(dest), den_size);
MPN_COPY (dp, PTR(DEN(src)), den_size);
}
void
mpq_abs (mpq_ptr dst, mpq_srcptr src)
{
mp_size_t num_abs_size = ABSIZ(NUM(src));
if (dst != src)
{
mp_size_t den_size = SIZ(DEN(src));
mp_ptr dp;
dp = MPZ_NEWALLOC (NUM(dst), num_abs_size);
MPN_COPY (dp, PTR(NUM(src)), num_abs_size);
dp = MPZ_NEWALLOC (DEN(dst), den_size);
SIZ(DEN(dst)) = den_size;
MPN_COPY (dp, PTR(DEN(src)), den_size);
}
SIZ(NUM(dst)) = num_abs_size;
}
size_t
mpq_inp_str (mpq_ptr q, FILE *fp, int base)
{
size_t nread;
int c;
if (fp == NULL)
fp = stdin;
SIZ(DEN(q)) = 1;
PTR(DEN(q))[0] = 1;
nread = mpz_inp_str (mpq_numref(q), fp, base);
if (nread == 0)
return 0;
c = getc (fp);
nread++;
if (c == '/')
{
c = getc (fp);
nread++;
nread = mpz_inp_str_nowhite (mpq_denref(q), fp, base, c, nread);
if (nread == 0)
{
SIZ(NUM(q)) = 0;
SIZ(DEN(q)) = 1;
PTR(DEN(q))[0] = 1;
}
}
else
{
ungetc (c, fp);
nread--;
}
return nread;
}
void
mpq_inv (mpq_ptr dest, mpq_srcptr src)
{
mp_size_t num_size = SIZ(NUM(src));
mp_size_t den_size = SIZ(DEN(src));
if (num_size < 0)
{
num_size = -num_size;
den_size = -den_size;
}
else if (UNLIKELY (num_size == 0))
DIVIDE_BY_ZERO;
SIZ(DEN(dest)) = num_size;
SIZ(NUM(dest)) = den_size;
/* If dest == src we may just swap the numerator and denominator;
we ensured that the new denominator is positive. */
if (dest == src)
{
MP_PTR_SWAP (PTR(NUM(dest)), PTR(DEN(dest)));
MP_SIZE_T_SWAP (ALLOC(NUM(dest)), ALLOC(DEN(dest)));
}
else
{
mp_ptr dp;
den_size = ABS (den_size);
dp = MPZ_NEWALLOC (NUM(dest), den_size);
MPN_COPY (dp, PTR(DEN(src)), den_size);
dp = MPZ_NEWALLOC (DEN(dest), num_size);
MPN_COPY (dp, PTR(NUM(src)), num_size);
}
}
void
mpq_set_f (mpq_ptr q, mpf_srcptr f)
{
mp_size_t fexp = EXP(f);
mp_ptr fptr = PTR(f);
mp_size_t fsize = SIZ(f);
mp_size_t abs_fsize = ABS(fsize);
mp_limb_t flow;
if (fsize == 0)
{
/* set q=0 */
SIZ(NUM(q)) = 0;
SIZ(DEN(q)) = 1;
PTR(DEN(q))[0] = 1;
return;
}
/* strip low zero limbs from f */
flow = *fptr;
MPN_STRIP_LOW_ZEROS_NOT_ZERO (fptr, abs_fsize, flow);
if (fexp >= abs_fsize)
{
/* radix point is to the right of the limbs, no denominator */
mp_ptr num_ptr;
num_ptr = MPZ_NEWALLOC (mpq_numref (q), fexp);
MPN_ZERO (num_ptr, fexp - abs_fsize);
MPN_COPY (num_ptr + fexp - abs_fsize, fptr, abs_fsize);
SIZ(NUM(q)) = fsize >= 0 ? fexp : -fexp;
SIZ(DEN(q)) = 1;
PTR(DEN(q))[0] = 1;
}
else
{
/* radix point is within or to the left of the limbs, use denominator */
mp_ptr num_ptr, den_ptr;
mp_size_t den_size;
den_size = abs_fsize - fexp;
num_ptr = MPZ_NEWALLOC (mpq_numref (q), abs_fsize);
den_ptr = MPZ_NEWALLOC (mpq_denref (q), den_size+1);
if (flow & 1)
{
/* no powers of two to strip from numerator */
MPN_COPY (num_ptr, fptr, abs_fsize);
MPN_ZERO (den_ptr, den_size);
den_ptr[den_size] = 1;
}
else
{
/* right shift numerator, adjust denominator accordingly */
int shift;
den_size--;
count_trailing_zeros (shift, flow);
mpn_rshift (num_ptr, fptr, abs_fsize, shift);
abs_fsize -= (num_ptr[abs_fsize-1] == 0);
MPN_ZERO (den_ptr, den_size);
den_ptr[den_size] = GMP_LIMB_HIGHBIT >> (shift-1);
}
SIZ(NUM(q)) = fsize >= 0 ? abs_fsize : -abs_fsize;
SIZ(DEN(q)) = den_size + 1;
}
}
int
_mpq_cmp_ui (mpq_srcptr op1, unsigned long int num2, unsigned long int den2)
{
mp_size_t num1_size = SIZ(NUM(op1));
mp_size_t den1_size = SIZ(DEN(op1));
mp_size_t tmp1_size, tmp2_size;
mp_ptr tmp1_ptr, tmp2_ptr;
mp_limb_t cy_limb;
int cc;
TMP_DECL;
#if GMP_NAIL_BITS != 0
if ((num2 | den2) > GMP_NUMB_MAX)
{
mpq_t op2;
mpq_init (op2);
mpz_set_ui (mpq_numref (op2), num2);
mpz_set_ui (mpq_denref (op2), den2);
cc = mpq_cmp (op1, op2);
mpq_clear (op2);
return cc;
}
#endif
/* need canonical sign to get right result */
ASSERT (den1_size > 0);
if (UNLIKELY (den2 == 0))
DIVIDE_BY_ZERO;
if (num2 == 0)
return num1_size;
if (num1_size <= 0)
return -1;
/* NUM1 x DEN2 is either TMP1_SIZE limbs or TMP1_SIZE-1 limbs.
Same for NUM1 x DEN1 with respect to TMP2_SIZE. */
if (num1_size > den1_size + 1)
/* NUM1 x DEN2 is surely larger in magnitude than NUM2 x DEN1. */
return num1_size;
if (den1_size > num1_size + 1)
/* NUM1 x DEN2 is surely smaller in magnitude than NUM2 x DEN1. */
return -num1_size;
TMP_MARK;
TMP_ALLOC_LIMBS_2 (tmp1_ptr, num1_size + 1, tmp2_ptr, den1_size + 1);
cy_limb = mpn_mul_1 (tmp1_ptr, PTR(NUM(op1)), num1_size,
(mp_limb_t) den2);
tmp1_ptr[num1_size] = cy_limb;
tmp1_size = num1_size + (cy_limb != 0);
cy_limb = mpn_mul_1 (tmp2_ptr, PTR(DEN(op1)), den1_size,
(mp_limb_t) num2);
tmp2_ptr[den1_size] = cy_limb;
tmp2_size = den1_size + (cy_limb != 0);
cc = tmp1_size - tmp2_size != 0
? tmp1_size - tmp2_size : mpn_cmp (tmp1_ptr, tmp2_ptr, tmp1_size);
TMP_FREE;
return cc;
}
double
mpq_get_d (mpq_srcptr src)
{
double res;
mp_srcptr np, dp;
mp_ptr remp, tp;
mp_size_t nsize = SIZ(NUM(src));
mp_size_t dsize = SIZ(DEN(src));
mp_size_t qsize, prospective_qsize, zeros, chop, tsize;
mp_size_t sign_quotient = nsize;
long exp;
#define N_QLIMBS (1 + (sizeof (double) + GMP_LIMB_BYTES-1) / GMP_LIMB_BYTES)
mp_limb_t qarr[N_QLIMBS + 1];
mp_ptr qp = qarr;
TMP_DECL;
ASSERT (dsize > 0); /* canonical src */
/* mpn_get_d below requires a non-zero operand */
if (UNLIKELY (nsize == 0))
return 0.0;
TMP_MARK;
nsize = ABS (nsize);
dsize = ABS (dsize);
np = PTR(NUM(src));
dp = PTR(DEN(src));
prospective_qsize = nsize - dsize + 1; /* from using given n,d */
qsize = N_QLIMBS + 1; /* desired qsize */
zeros = qsize - prospective_qsize; /* padding n to get qsize */
exp = (long) -zeros * GMP_NUMB_BITS; /* relative to low of qp */
chop = MAX (-zeros, 0); /* negative zeros means shorten n */
np += chop;
nsize -= chop;
zeros += chop; /* now zeros >= 0 */
tsize = nsize + zeros; /* size for possible copy of n */
if (WANT_TMP_DEBUG)
{
/* separate blocks, for malloc debugging */
remp = TMP_ALLOC_LIMBS (dsize);
tp = (zeros > 0 ? TMP_ALLOC_LIMBS (tsize) : NULL);
}
else
{
/* one block with conditionalized size, for efficiency */
remp = TMP_ALLOC_LIMBS (dsize + (zeros > 0 ? tsize : 0));
tp = remp + dsize;
}
/* zero extend n into temporary space, if necessary */
if (zeros > 0)
{
MPN_ZERO (tp, zeros);
MPN_COPY (tp+zeros, np, nsize);
np = tp;
nsize = tsize;
}
ASSERT (qsize == nsize - dsize + 1);
mpn_tdiv_qr (qp, remp, (mp_size_t) 0, np, nsize, dp, dsize);
/* strip possible zero high limb */
qsize -= (qp[qsize-1] == 0);
res = mpn_get_d (qp, qsize, sign_quotient, exp);
TMP_FREE;
return res;
}
int
mpq_cmp (const MP_RAT *op1, const MP_RAT *op2)
{
mp_size_t num1_size = SIZ(NUM(op1));
mp_size_t den1_size = SIZ(DEN(op1));
mp_size_t num2_size = SIZ(NUM(op2));
mp_size_t den2_size = SIZ(DEN(op2));
mp_size_t tmp1_size, tmp2_size;
mp_ptr tmp1_ptr, tmp2_ptr;
mp_size_t num1_sign;
int cc;
TMP_DECL;
/* need canonical signs to get right result */
ASSERT (den1_size > 0);
ASSERT (den2_size > 0);
if (num1_size == 0)
return -num2_size;
if (num2_size == 0)
return num1_size;
if ((num1_size ^ num2_size) < 0) /* I.e. are the signs different? */
return num1_size;
num1_sign = num1_size;
num1_size = ABS (num1_size);
num2_size = ABS (num2_size);
tmp1_size = num1_size + den2_size;
tmp2_size = num2_size + den1_size;
/* 1. Check to see if we can tell which operand is larger by just looking at
the number of limbs. */
/* NUM1 x DEN2 is either TMP1_SIZE limbs or TMP1_SIZE-1 limbs.
Same for NUM1 x DEN1 with respect to TMP2_SIZE. */
if (tmp1_size > tmp2_size + 1)
/* NUM1 x DEN2 is surely larger in magnitude than NUM2 x DEN1. */
return num1_sign;
if (tmp2_size > tmp1_size + 1)
/* NUM1 x DEN2 is surely smaller in magnitude than NUM2 x DEN1. */
return -num1_sign;
/* 2. Same, but compare the number of significant bits. */
{
int cnt1, cnt2;
mp_bitcnt_t bits1, bits2;
count_leading_zeros (cnt1, PTR(NUM(op1))[num1_size - 1]);
count_leading_zeros (cnt2, PTR(DEN(op2))[den2_size - 1]);
bits1 = tmp1_size * GMP_NUMB_BITS - cnt1 - cnt2 + 2 * GMP_NAIL_BITS;
count_leading_zeros (cnt1, PTR(NUM(op2))[num2_size - 1]);
count_leading_zeros (cnt2, PTR(DEN(op1))[den1_size - 1]);
bits2 = tmp2_size * GMP_NUMB_BITS - cnt1 - cnt2 + 2 * GMP_NAIL_BITS;
if (bits1 > bits2 + 1)
return num1_sign;
if (bits2 > bits1 + 1)
return -num1_sign;
}
/* 3. Finally, cross multiply and compare. */
TMP_MARK;
TMP_ALLOC_LIMBS_2 (tmp1_ptr,tmp1_size, tmp2_ptr,tmp2_size);
if (num1_size >= den2_size)
tmp1_size -= 0 == mpn_mul (tmp1_ptr,
PTR(NUM(op1)), num1_size,
PTR(DEN(op2)), den2_size);
else
tmp1_size -= 0 == mpn_mul (tmp1_ptr,
PTR(DEN(op2)), den2_size,
PTR(NUM(op1)), num1_size);
if (num2_size >= den1_size)
tmp2_size -= 0 == mpn_mul (tmp2_ptr,
PTR(NUM(op2)), num2_size,
PTR(DEN(op1)), den1_size);
else
tmp2_size -= 0 == mpn_mul (tmp2_ptr,
PTR(DEN(op1)), den1_size,
PTR(NUM(op2)), num2_size);
cc = tmp1_size - tmp2_size != 0
? tmp1_size - tmp2_size : mpn_cmp (tmp1_ptr, tmp2_ptr, tmp1_size);
TMP_FREE;
return num1_sign < 0 ? -cc : cc;
}
choke me
#endif
void
mpq_set_d (mpq_ptr dest, double d)
{
int negative;
mp_exp_t exp;
mp_limb_t tp[LIMBS_PER_DOUBLE];
mp_ptr np, dp;
mp_size_t nn, dn;
int c;
DOUBLE_NAN_INF_ACTION (d,
__gmp_invalid_operation (),
__gmp_invalid_operation ());
negative = d < 0;
d = ABS (d);
exp = __gmp_extract_double (tp, d);
/* There are two main version of the conversion. The `then' arm handles
numbers with a fractional part, while the `else' arm handles integers. */
#if LIMBS_PER_DOUBLE == 4
if (exp <= 1 || (exp == 2 && (tp[0] | tp[1]) != 0))
#endif
#if LIMBS_PER_DOUBLE == 3
if (exp <= 1 || (exp == 2 && tp[0] != 0))
#endif
#if LIMBS_PER_DOUBLE == 2
if (exp <= 1)
#endif
{
if (d == 0.0)
{
SIZ(NUM(dest)) = 0;
SIZ(DEN(dest)) = 1;
PTR(DEN(dest))[0] = 1;
return;
}
#if LIMBS_PER_DOUBLE == 4
np = MPZ_NEWALLOC (NUM(dest), 4);
if ((tp[0] | tp[1] | tp[2]) == 0)
np[0] = tp[3], nn = 1;
else if ((tp[0] | tp[1]) == 0)
np[1] = tp[3], np[0] = tp[2], nn = 2;
else if (tp[0] == 0)
np[2] = tp[3], np[1] = tp[2], np[0] = tp[1], nn = 3;
else
np[3] = tp[3], np[2] = tp[2], np[1] = tp[1], np[0] = tp[0], nn = 4;
#endif
#if LIMBS_PER_DOUBLE == 3
np = MPZ_NEWALLOC (NUM(dest), 3);
if ((tp[0] | tp[1]) == 0)
np[0] = tp[2], nn = 1;
else if (tp[0] == 0)
np[1] = tp[2], np[0] = tp[1], nn = 2;
else
np[2] = tp[2], np[1] = tp[1], np[0] = tp[0], nn = 3;
#endif
#if LIMBS_PER_DOUBLE == 2
np = MPZ_NEWALLOC (NUM(dest), 2);
if (tp[0] == 0)
np[0] = tp[1], nn = 1;
else
np[1] = tp[1], np[0] = tp[0], nn = 2;
#endif
dn = nn + 1 - exp;
ASSERT (dn > 0); /* -exp >= -1; nn >= 1*/
dp = MPZ_NEWALLOC (DEN(dest), dn);
MPN_ZERO (dp, dn - 1);
dp[dn - 1] = 1;
count_trailing_zeros (c, np[0] | dp[0]);
if (c != 0)
{
mpn_rshift (np, np, nn, c);
nn -= np[nn - 1] == 0;
--dn;
dp[dn - 1] = CNST_LIMB(1) << (GMP_LIMB_BITS - c);
}
SIZ(DEN(dest)) = dn;
}
else
{
nn = exp;
np = MPZ_NEWALLOC (NUM(dest), nn);
switch (nn)
{
default:
MPN_ZERO (np, nn - LIMBS_PER_DOUBLE);
np += nn - LIMBS_PER_DOUBLE;
/* fall through */
#if LIMBS_PER_DOUBLE == 2
case 2:
np[1] = tp[1], np[0] = tp[0];
break;
#endif
#if LIMBS_PER_DOUBLE == 3
case 3:
np[2] = tp[2], np[1] = tp[1], np[0] = tp[0];
break;
case 2:
np[1] = tp[2], np[0] = tp[1];
break;
#endif
#if LIMBS_PER_DOUBLE == 4
case 4:
np[3] = tp[3], np[2] = tp[2], np[1] = tp[1], np[0] = tp[0];
break;
case 3:
np[2] = tp[3], np[1] = tp[2], np[0] = tp[1];
break;
case 2:
np[1] = tp[3], np[0] = tp[2];
break;
#endif
}
*PTR(DEN(dest)) = 1;
SIZ(DEN(dest)) = 1;
}
SIZ(NUM(dest)) = negative ? -nn : nn;
}