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Commit 04a5f724 authored by Davis King's avatar Davis King
Browse files

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 ...@@ -74,7 +74,13 @@ namespace dlib
int num_bits 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; num_bits_in_register = num_bits;
...@@ -107,6 +113,15 @@ namespace dlib ...@@ -107,6 +113,15 @@ namespace dlib
rand_type& rnd 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)); 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 // Next we set all the states where this bit doesn't have the given value to 0
...@@ -143,7 +158,15 @@ namespace dlib ...@@ -143,7 +158,15 @@ namespace dlib
rand_type& rnd 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)); const bool value = (rnd.get_random_double() < probability_of_bit(bit));
quantum_register temp; quantum_register temp;
...@@ -180,14 +203,16 @@ namespace dlib ...@@ -180,14 +203,16 @@ namespace dlib
double probability_of_bit ( double probability_of_bit (
int bit int bit
) const ) 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 // make a mask that selects our bit
unsigned long mask = 1; unsigned long mask = 1;
...@@ -247,7 +272,16 @@ namespace dlib ...@@ -247,7 +272,16 @@ namespace dlib
void apply_gate_to (quantum_register& reg) const 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); quantum_register temp(reg);
...@@ -294,7 +328,19 @@ namespace dlib ...@@ -294,7 +328,19 @@ namespace dlib
long row_idx long row_idx
) const ) 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); return exp.compute_state_element(reg,row_idx);
} }
...@@ -334,7 +380,18 @@ namespace dlib ...@@ -334,7 +380,18 @@ namespace dlib
long row_idx long row_idx
) const ) 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; qc_scalar_type result = 0;
for (long c = 0; c < T::dims; ++c) for (long c = 0; c < T::dims; ++c)
...@@ -387,7 +444,18 @@ namespace dlib ...@@ -387,7 +444,18 @@ namespace dlib
long row_idx long row_idx
) const ) 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; return rowm(data,row_idx)*reg;
} }
...@@ -601,7 +669,18 @@ namespace dlib ...@@ -601,7 +669,18 @@ namespace dlib
long row_idx long row_idx
) const ) 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; unsigned long output = row_idx;
// if the input control bit is set // if the input control bit is set
...@@ -676,7 +755,18 @@ namespace dlib ...@@ -676,7 +755,18 @@ namespace dlib
long row_idx long row_idx
) const ) 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; unsigned long output;
// if the input control bits are set // if the input control bits are set
......
dlib/quantum_computing/quantum_computing_abstract.h
View file @ 04a5f724
...@@ -54,6 +54,8 @@ namespace dlib ...@@ -54,6 +54,8 @@ namespace dlib
int new_num_bits int new_num_bits
); );
/*! /*!
requires
- 1 <= new_num_bits <= 30
ensures ensures
- #num_bits() == new_num_bits - #num_bits() == new_num_bits
- #state_vector().nr() == 2^new_num_bits - #state_vector().nr() == 2^new_num_bits
...@@ -204,6 +206,9 @@ namespace dlib ...@@ -204,6 +206,9 @@ namespace dlib
long c long c
) const; ) const;
/*! /*!
requires
- 0 <= r < dims
- 0 <= c < dims
ensures ensures
- returns ref()(r,c) - returns ref()(r,c)
!*/ !*/
......
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