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Commit 04a5f724 authored by Davis King's avatar Davis King
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More code cleanup 

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402686
parent 45c56bb2
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Showing with 110 additions and 15 deletions
dlib/quantum_computing/quantum_computing.h
View file @ 04a5f724
......@@ -74,7 +74,13 @@ namespace dlib
int num_bits
)
{
DLIB_ASSERT(1 <= num_bits && num_bits <= 30, "");
// make sure requires clause is not broken
DLIB_CASSERT(1 <= num_bits && num_bits <= 30,
"\tvoid quantum_register::set_num_bits()"
<< "\n\tinvalid arguments to this function"
<< "\n\tnum_bits: " << num_bits
<< "\n\tthis: " << this
);
num_bits_in_register = num_bits;
......@@ -107,6 +113,15 @@ namespace dlib
rand_type& rnd
)
{
// make sure requires clause is not broken
DLIB_CASSERT(0 <= bit && bit < num_bits(),
"\tbool quantum_register::measure_bit()"
<< "\n\tinvalid arguments to this function"
<< "\n\tbit: " << bit
<< "\n\tnum_bits(): " << num_bits()
<< "\n\tthis: " << this
);
const bool value = (rnd.get_random_double() < probability_of_bit(bit));
// Next we set all the states where this bit doesn't have the given value to 0
......@@ -143,7 +158,15 @@ namespace dlib
rand_type& rnd
)
{
DLIB_ASSERT(0 <= bit && bit < num_bits() && num_bits() > 0,"");
// make sure requires clause is not broken
DLIB_CASSERT(0 <= bit && bit < num_bits() && num_bits() > 0,
"\tbool quantum_register::measure_and_remove_bit()"
<< "\n\tinvalid arguments to this function"
<< "\n\tbit: " << bit
<< "\n\tnum_bits(): " << num_bits()
<< "\n\tthis: " << this
);
const bool value = (rnd.get_random_double() < probability_of_bit(bit));
quantum_register temp;
......@@ -180,14 +203,16 @@ namespace dlib
double probability_of_bit (
int bit
) const
/*!
requires
- 0 <= bit < num_bits()
ensures
- returns the probability of measuring the given bit and it being true
!*/
{
DLIB_ASSERT(0 <= bit && bit < num_bits(),"");
// make sure requires clause is not broken
DLIB_CASSERT(0 <= bit && bit < num_bits(),
"\tdouble quantum_register::probability_of_bit()"
<< "\n\tinvalid arguments to this function"
<< "\n\tbit: " << bit
<< "\n\tnum_bits(): " << num_bits()
<< "\n\tthis: " << this
);
// make a mask that selects our bit
unsigned long mask = 1;
......@@ -247,7 +272,16 @@ namespace dlib
void apply_gate_to (quantum_register& reg) const
{
DLIB_CASSERT(reg.num_bits() == num_bits,"reg.num_bits(): " << reg.num_bits() << " num_bits: " << num_bits);
// make sure requires clause is not broken
DLIB_CASSERT(reg.num_bits() == num_bits,
"\tvoid gate_exp::apply_gate_to()"
<< "\n\tinvalid arguments to this function"
<< "\n\treg.num_bits(): " << reg.num_bits()
<< "\n\tnum_bits: " << num_bits
<< "\n\tthis: " << this
);
quantum_register temp(reg);
......@@ -294,7 +328,19 @@ namespace dlib
long row_idx
) const
{
DLIB_ASSERT(reg.size() == dims,"");
// make sure requires clause is not broken
DLIB_ASSERT(reg.nr() == dims && reg.nc() == 1 &&
0 <= row_idx && row_idx < dims,
"\tqc_scalar_type gate_exp::compute_state_element(reg,row_idx)"
<< "\n\tinvalid arguments to this function"
<< "\n\treg.nr(): " << reg.nr()
<< "\n\treg.nc(): " << reg.nc()
<< "\n\tdims: " << dims
<< "\n\trow_idx: " << row_idx
<< "\n\tthis: " << this
);
return exp.compute_state_element(reg,row_idx);
}
......@@ -334,7 +380,18 @@ namespace dlib
long row_idx
) const
{
DLIB_ASSERT(reg.size() == dims,"");
// make sure requires clause is not broken
DLIB_ASSERT(reg.nr() == dims && reg.nc() == 1 &&
0 <= row_idx && row_idx < dims,
"\tqc_scalar_type composite_gate::compute_state_element(reg,row_idx)"
<< "\n\tinvalid arguments to this function"
<< "\n\treg.nr(): " << reg.nr()
<< "\n\treg.nc(): " << reg.nc()
<< "\n\tdims: " << dims
<< "\n\trow_idx: " << row_idx
<< "\n\tthis: " << this
);
qc_scalar_type result = 0;
for (long c = 0; c < T::dims; ++c)
......@@ -387,7 +444,18 @@ namespace dlib
long row_idx
) const
{
DLIB_ASSERT(reg.size() == dims,"");
// make sure requires clause is not broken
DLIB_ASSERT(reg.nr() == dims && reg.nc() == 1 &&
0 <= row_idx && row_idx < dims,
"\tqc_scalar_type gate::compute_state_element(reg,row_idx)"
<< "\n\tinvalid arguments to this function"
<< "\n\treg.nr(): " << reg.nr()
<< "\n\treg.nc(): " << reg.nc()
<< "\n\tdims: " << dims
<< "\n\trow_idx: " << row_idx
<< "\n\tthis: " << this
);
return rowm(data,row_idx)*reg;
}
......@@ -601,7 +669,18 @@ namespace dlib
long row_idx
) const
{
DLIB_ASSERT(reg.size() == dims,"");
// make sure requires clause is not broken
DLIB_ASSERT(reg.nr() == dims && reg.nc() == 1 &&
0 <= row_idx && row_idx < dims,
"\tqc_scalar_type cnot::compute_state_element(reg,row_idx)"
<< "\n\tinvalid arguments to this function"
<< "\n\treg.nr(): " << reg.nr()
<< "\n\treg.nc(): " << reg.nc()
<< "\n\tdims: " << dims
<< "\n\trow_idx: " << row_idx
<< "\n\tthis: " << this
);
unsigned long output = row_idx;
// if the input control bit is set
......@@ -676,7 +755,18 @@ namespace dlib
long row_idx
) const
{
DLIB_ASSERT(reg.size() == dims,"");
// make sure requires clause is not broken
DLIB_ASSERT(reg.nr() == dims && reg.nc() == 1 &&
0 <= row_idx && row_idx < dims,
"\tqc_scalar_type toffoli::compute_state_element(reg,row_idx)"
<< "\n\tinvalid arguments to this function"
<< "\n\treg.nr(): " << reg.nr()
<< "\n\treg.nc(): " << reg.nc()
<< "\n\tdims: " << dims
<< "\n\trow_idx: " << row_idx
<< "\n\tthis: " << this
);
unsigned long output;
// if the input control bits are set
......
dlib/quantum_computing/quantum_computing_abstract.h
View file @ 04a5f724
......@@ -54,6 +54,8 @@ namespace dlib
int new_num_bits
);
/*!
requires
- 1 <= new_num_bits <= 30
ensures
- #num_bits() == new_num_bits
- #state_vector().nr() == 2^new_num_bits
......@@ -204,6 +206,9 @@ namespace dlib
long c
) const;
/*!
requires
- 0 <= r < dims
- 0 <= c < dims
ensures
- returns ref()(r,c)
!*/
......
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