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Cleaned TwoElectronRRVectorized.ml

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This commit is contained in:
Anthony Scemama 2019-03-12 13:48:55 +01:00
parent db00f8e27f
commit 8bfee5f8cf
5 changed files with 94 additions and 70 deletions
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3
Basis/ERI.ml
View File

@ -7,7 +7,8 @@ module Zm = struct
let name = "Electron repulsion integrals" let name = "Electron repulsion integrals"
let zero_m ~maxm ~expo_pq_inv ~norm_pq_sq = let zero_m ~maxm ~expo_p_inv ~expo_q_inv ~norm_pq_sq =
let expo_pq_inv = expo_p_inv +. expo_q_inv in
assert (expo_pq_inv <> 0.); assert (expo_pq_inv <> 0.);
let norm_pq_sq = let norm_pq_sq =
if norm_pq_sq > integrals_cutoff then norm_pq_sq else 0. if norm_pq_sq > integrals_cutoff then norm_pq_sq else 0.

3
Basis/TwoElectronIntegrals.ml
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@ -17,7 +17,8 @@ module Fis = FourIdxStorage
module type Zero_mType = module type Zero_mType =
sig sig
val name : string val name : string
val zero_m : maxm:int -> expo_pq_inv:float -> norm_pq_sq:float -> float array val zero_m : maxm:int -> expo_p_inv:float -> expo_q_inv:float ->
norm_pq_sq:float -> float array
end end

3
Basis/TwoElectronIntegrals.mli
View File

@ -11,7 +11,8 @@ module type Zero_mType =
val name : string val name : string
(** Name of the kind of integrals, for printing purposes. *) (** Name of the kind of integrals, for printing purposes. *)
val zero_m : maxm:int -> expo_pq_inv:float -> norm_pq_sq:float -> float array val zero_m : maxm:int -> expo_p_inv:float -> expo_q_inv:float ->
norm_pq_sq:float -> float array
(** The returned float array contains all the {% $(00|00)^m$ %} values, where (** The returned float array contains all the {% $(00|00)^m$ %} values, where
[m] is the index of the array. [m] is the index of the array.

56
Basis/TwoElectronRR.ml
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@ -21,8 +21,8 @@ type four_idx_intermediates =
{ {
expo_b : float ; expo_b : float ;
expo_d : float ; expo_d : float ;
expo_inv_p : float ; expo_p_inv : float ;
expo_inv_q : float ; expo_q_inv : float ;
center_ab : Co.t ; center_ab : Co.t ;
center_cd : Co.t ; center_cd : Co.t ;
center_pq : Co.t ; center_pq : Co.t ;
@ -41,8 +41,8 @@ let rec hvrr_two_e
let abcd = { let abcd = {
expo_b = abcd.expo_d ; expo_b = abcd.expo_d ;
expo_d = abcd.expo_b ; expo_d = abcd.expo_b ;
expo_inv_p = abcd.expo_inv_q ; expo_p_inv = abcd.expo_q_inv ;
expo_inv_q = abcd.expo_inv_p ; expo_q_inv = abcd.expo_p_inv ;
center_ab = abcd.center_cd ; center_ab = abcd.center_cd ;
center_cd = abcd.center_ab ; center_cd = abcd.center_ab ;
center_pq = Co.neg abcd.center_pq ; center_pq = Co.neg abcd.center_pq ;
@ -67,8 +67,8 @@ let rec hvrr_two_e
| _ -> Co.Z | _ -> Co.Z
in in
let expo_inv_p = abcd.expo_inv_p let expo_p_inv = abcd.expo_p_inv
and expo_inv_q = abcd.expo_inv_q and expo_q_inv = abcd.expo_q_inv
and center_ab = abcd.center_ab and center_ab = abcd.center_ab
and center_cd = abcd.center_cd and center_cd = abcd.center_cd
and center_pq = abcd.center_pq and center_pq = abcd.center_pq
@ -89,8 +89,8 @@ let rec hvrr_two_e
let am = Po.decr xyz angMom_a in let am = Po.decr xyz angMom_a in
let amxyz = Po.get xyz am in let amxyz = Po.get xyz am in
let f1 = expo_inv_p *. Co.get xyz center_pq let f1 = expo_p_inv *. Co.get xyz center_pq
and f2 = abcd.expo_b *. expo_inv_p *. Co.get xyz center_ab and f2 = abcd.expo_b *. expo_p_inv *. Co.get xyz center_ab
in in
let result = Array.create_float (maxsze - angMom_a.Po.tot) in let result = Array.create_float (maxsze - angMom_a.Po.tot) in
if amxyz = 0 then if amxyz = 0 then
@ -104,10 +104,10 @@ let rec hvrr_two_e
let amm = Po.decr xyz am in let amm = Po.decr xyz am in
let v3 = vrr0 amm in let v3 = vrr0 amm in
let v1 = vrr0 am in let v1 = vrr0 am in
let f3 = (float_of_int amxyz) *. expo_inv_p *. 0.5 in let f3 = (float_of_int amxyz) *. expo_p_inv *. 0.5 in
Array.iteri (fun m _ -> Array.iteri (fun m _ ->
result.(m) <- f1 *. v1.(m+1) -. f2 *. v1.(m) result.(m) <- f1 *. v1.(m+1) -. f2 *. v1.(m)
+. f3 *. (v3.(m) +. expo_inv_p *. v3.(m+1)) ) result +. f3 *. (v3.(m) +. expo_p_inv *. v3.(m+1)) ) result
end; end;
result result
in Zmap.add map_1d key result; in Zmap.add map_1d key result;
@ -132,16 +132,16 @@ let rec hvrr_two_e
let axyz = Po.get xyz angMom_a in let axyz = Po.get xyz angMom_a in
let f1 = let f1 =
-. abcd.expo_d *. expo_inv_q *. Co.get xyz center_cd -. abcd.expo_d *. expo_q_inv *. Co.get xyz center_cd
and f2 = and f2 =
expo_inv_q *. Co.get xyz center_pq expo_q_inv *. Co.get xyz center_pq
in in
let result = Array.make (maxsze - angMom_a.Po.tot - angMom_c.Po.tot) 0. in let result = Array.make (maxsze - angMom_a.Po.tot - angMom_c.Po.tot) 0. in
if axyz > 0 then if axyz > 0 then
begin begin
let am = Po.decr xyz angMom_a in let am = Po.decr xyz angMom_a in
let f5 = let f5 =
(float_of_int axyz) *. expo_inv_p *. expo_inv_q *. 0.5 (float_of_int axyz) *. expo_p_inv *. expo_q_inv *. 0.5
in in
if (abs_float f5 > cutoff) then if (abs_float f5 > cutoff) then
let v5 = let v5 =
@ -153,10 +153,10 @@ let rec hvrr_two_e
if cmxyz > 0 then if cmxyz > 0 then
begin begin
let f3 = let f3 =
(float_of_int cmxyz) *. expo_inv_q *. 0.5 (float_of_int cmxyz) *. expo_q_inv *. 0.5
in in
if (abs_float f3 > cutoff) || if (abs_float f3 > cutoff) ||
(abs_float (f3 *. expo_inv_q) > cutoff) then (abs_float (f3 *. expo_q_inv) > cutoff) then
begin begin
let v3 = let v3 =
let cmm = Po.decr xyz cm in let cmm = Po.decr xyz cm in
@ -164,7 +164,7 @@ let rec hvrr_two_e
in in
Array.iteri (fun m _ -> Array.iteri (fun m _ ->
result.(m) <- result.(m) +. result.(m) <- result.(m) +.
f3 *. (v3.(m) +. expo_inv_q *. v3.(m+1)) ) result f3 *. (v3.(m) +. expo_q_inv *. v3.(m+1)) ) result
end end
end; end;
if ( (abs_float f1 > cutoff) || (abs_float f2 > cutoff) ) then if ( (abs_float f1 > cutoff) || (abs_float f2 > cutoff) ) then
@ -196,7 +196,7 @@ let rec hvrr_two_e
let cm = Po.decr xyz angMom_c in let cm = Po.decr xyz angMom_c in
let cmxyz = Po.get xyz cm in let cmxyz = Po.get xyz cm in
let expo_inv_q_over_p = expo_inv_q /. expo_inv_p in let expo_inv_q_over_p = expo_q_inv /. expo_p_inv in
let f = let f =
Co.get xyz center_qc +. expo_inv_q_over_p *. Co.get xyz center_qc +. expo_inv_q_over_p *.
Co.get xyz center_pa Co.get xyz center_pa
@ -205,7 +205,7 @@ let rec hvrr_two_e
let result = let result =
if cmxyz < 1 then result else if cmxyz < 1 then result else
let f = 0.5 *. (float_of_int cmxyz) *. expo_inv_q in let f = 0.5 *. (float_of_int cmxyz) *. expo_q_inv in
if abs_float f < cutoff then 0. else if abs_float f < cutoff then 0. else
let cmm = Po.decr xyz cm in let cmm = Po.decr xyz cm in
let v3 = trr angMom_a cmm in let v3 = trr angMom_a cmm in
@ -225,7 +225,7 @@ let rec hvrr_two_e
in in
let result = let result =
if axyz < 1 then result else if axyz < 1 then result else
let f = 0.5 *. (float_of_int axyz) *. expo_inv_q in let f = 0.5 *. (float_of_int axyz) *. expo_q_inv in
if abs_float f < cutoff then result else if abs_float f < cutoff then result else
let am = Po.decr xyz angMom_a in let am = Po.decr xyz angMom_a in
let v2 = trr am cm in let v2 = trr am cm in
@ -332,16 +332,15 @@ let contracted_class_shell_pair_couple ~zero_m shell_pair_couple : float Zmap.t
and sp_cd = Pspc.shell_pair_q spc and sp_cd = Pspc.shell_pair_q spc
in in
let expo_inv_p = Psp.exponent_inv sp_ab let expo_p_inv = Psp.exponent_inv sp_ab
in in
let center_pq = Co.(Psp.center sp_ab |- Psp.center sp_cd) in let center_pq = Co.(Psp.center sp_ab |- Psp.center sp_cd) in
let norm_pq_sq = Co.dot center_pq center_pq in let norm_pq_sq = Co.dot center_pq center_pq in
let expo_inv_q = Psp.exponent_inv sp_cd in let expo_q_inv = Psp.exponent_inv sp_cd in
let expo_pq_inv = expo_inv_p +. expo_inv_q in
let zero_m_array = let zero_m_array =
zero_m ~maxm ~expo_pq_inv ~norm_pq_sq zero_m ~maxm ~expo_p_inv ~expo_q_inv ~norm_pq_sq
in in
begin begin
@ -382,7 +381,7 @@ let contracted_class_shell_pair_couple ~zero_m shell_pair_couple : float Zmap.t
let coef_prod = coef_prod *. norm in let coef_prod = coef_prod *. norm in
let abcd = { let abcd = {
expo_b ; expo_d ; expo_inv_p ; expo_inv_q ; expo_b ; expo_d ; expo_p_inv ; expo_q_inv ;
center_ab ; center_cd ; center_pq ; center_ab ; center_cd ; center_pq ;
center_pa ; center_qc ; zero_m_array ; center_pa ; center_qc ; zero_m_array ;
} in } in
@ -444,16 +443,15 @@ let contracted_class_atomic_shell_pair_couple ~zero_m atomic_shell_pair_couple :
and sp_cd = Pspc.shell_pair_q spc and sp_cd = Pspc.shell_pair_q spc
in in
let expo_inv_p = Psp.exponent_inv sp_ab let expo_p_inv = Psp.exponent_inv sp_ab
in in
let center_pq = Co.(Psp.center sp_ab |- Psp.center sp_cd) in let center_pq = Co.(Psp.center sp_ab |- Psp.center sp_cd) in
let norm_pq_sq = Co.dot center_pq center_pq in let norm_pq_sq = Co.dot center_pq center_pq in
let expo_inv_q = Psp.exponent_inv sp_cd in let expo_q_inv = Psp.exponent_inv sp_cd in
let expo_pq_inv = expo_inv_p +. expo_inv_q in
let zero_m_array = let zero_m_array =
zero_m ~maxm ~expo_pq_inv ~norm_pq_sq zero_m ~maxm ~expo_p_inv ~expo_q_inv ~norm_pq_sq
in in
begin begin
@ -494,7 +492,7 @@ let contracted_class_atomic_shell_pair_couple ~zero_m atomic_shell_pair_couple :
let coef_prod = coef_prod *. norm in let coef_prod = coef_prod *. norm in
let abcd = { let abcd = {
expo_b ; expo_d ; expo_inv_p ; expo_inv_q ; expo_b ; expo_d ; expo_p_inv ; expo_q_inv ;
center_ab ; center_cd ; center_pq ; center_ab ; center_cd ; center_pq ;
center_pa ; center_qc ; zero_m_array ; center_pa ; center_qc ; zero_m_array ;
} in } in

99
Basis/TwoElectronRRVectorized.ml
View File

@ -23,17 +23,36 @@ let at_least_one_valid arr =
Array.iter (fun x -> if (abs_float x > cutoff) then raise Found) arr ; false Array.iter (fun x -> if (abs_float x > cutoff) then raise Found) arr ; false
with Found -> true with Found -> true
type fou_idx_intermediate =
{
expo_b : float array;
expo_d : float array;
expo_p_inv : float array;
expo_q_inv : float array;
center_ab : Co.t ;
center_cd : Co.t ;
center_pq : Co.axis -> float array array;
center_pa : Co.axis -> float array;
center_qc : Co.axis -> float array;
zero_m_array : float array array array;
}
(** Horizontal and Vertical Recurrence Relations (HVRR) *) (** Horizontal and Vertical Recurrence Relations (HVRR) *)
let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d) let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
zero_m_array abcd map_1d map_2d np nq
(expo_b, expo_d)
(expo_inv_p, expo_inv_q)
(center_ab, center_cd, center_pq)
(center_pa, center_qc)
map_1d map_2d np nq
= =
let expo_p_inv = abcd.expo_p_inv
and expo_q_inv = abcd.expo_q_inv
and center_ab = abcd.center_ab
and center_cd = abcd.center_cd
and center_pq = abcd.center_pq
in
let zero_m_array = abcd.zero_m_array in
let maxm = Array.length zero_m_array - 1 in let maxm = Array.length zero_m_array - 1 in
let get_xyz angMom = let get_xyz angMom =
@ -62,10 +81,11 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
begin begin
if abs_float cab >= cutoff then if abs_float cab >= cutoff then
let expo_b = abcd.expo_b in
Array.iteri (fun m result_m -> Array.iteri (fun m result_m ->
let v0 = v_am.(m) in let v0 = v_am.(m) in
Array.iteri (fun l result_ml -> Array.iteri (fun l result_ml ->
let f0 = -. expo_b.(l) *. expo_inv_p.(l) *. cab let f0 = -. expo_b.(l) *. expo_p_inv.(l) *. cab
and v0_l = v0.(l) and v0_l = v0.(l)
in in
Array.iteri (fun k v0_lk -> Array.iteri (fun k v0_lk ->
@ -87,14 +107,14 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
+. expo_inv_p_l *. center_pq_xyz_l.(k) *. p0_lk +. expo_inv_p_l *. center_pq_xyz_l.(k) *. p0_lk
) p0_l ) p0_l
) result ) result
) expo_inv_p ) expo_p_inv
else else
begin begin
let amm = Po.decr xyz am in let amm = Po.decr xyz am in
let amxyz = float_of_int amxyz in let amxyz = float_of_int amxyz in
let v_amm = vrr0_v amm in let v_amm = vrr0_v amm in
Array.iteri (fun l expo_inv_p_l -> Array.iteri (fun l expo_inv_p_l ->
let f = amxyz *. expo_inv_p.(l) *. 0.5 let f = amxyz *. expo_p_inv.(l) *. 0.5
and center_pq_xyz_l = (center_pq xyz).(l) and center_pq_xyz_l = (center_pq xyz).(l)
in in
Array.iteri (fun m result_m -> Array.iteri (fun m result_m ->
@ -111,7 +131,7 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
f *. (v1_l.(k) +. v2_l.(k) *. expo_inv_p_l) f *. (v1_l.(k) +. v2_l.(k) *. expo_inv_p_l)
) p0.(l) ) p0.(l)
) result ) result
) expo_inv_p ) expo_p_inv
end; end;
result result
in in
@ -139,8 +159,9 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
let f = -. (Co.get xyz center_cd) in let f = -. (Co.get xyz center_cd) in
let f1 = let f1 =
let expo_d = abcd.expo_d in
Array.init nq (fun k -> Array.init nq (fun k ->
let x = expo_d.(k) *. expo_inv_q.(k) *. f in let x = expo_d.(k) *. expo_q_inv.(k) *. f in
if ( (not !do_compute) && (abs_float x > cutoff) ) then if ( (not !do_compute) && (abs_float x > cutoff) ) then
do_compute := true; do_compute := true;
x) x)
@ -163,7 +184,7 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
Array.init np (fun l -> Array.init np (fun l ->
let cpq_l = (center_pq xyz).(l) in let cpq_l = (center_pq xyz).(l) in
Array.init nq (fun k -> Array.init nq (fun k ->
let x = expo_inv_q.(k) *. cpq_l.(k) in let x = expo_q_inv.(k) *. cpq_l.(k) in
if (!do_compute) then x if (!do_compute) then x
else (if abs_float x > cutoff then do_compute := true ; x) else (if abs_float x > cutoff then do_compute := true ; x)
) ) ) )
@ -212,7 +233,7 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
let fcm = (float_of_int (cxyz-1)) *. 0.5 in let fcm = (float_of_int (cxyz-1)) *. 0.5 in
let f1 = let f1 =
Array.init nq (fun k -> Array.init nq (fun k ->
let x = fcm *. expo_inv_q.(k) in let x = fcm *. expo_q_inv.(k) in
if (!do_compute) then x if (!do_compute) then x
else (if abs_float x > cutoff then do_compute := true ; x) else (if abs_float x > cutoff then do_compute := true ; x)
) )
@ -240,7 +261,7 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
let v3 = let v3 =
let f2 = let f2 =
Array.init nq (fun k -> Array.init nq (fun k ->
let x = expo_inv_q.(k) *. f1.(k) in let x = expo_q_inv.(k) *. f1.(k) in
if (!do_compute) then x if (!do_compute) then x
else (if abs_float x > cutoff then do_compute := true ; x) else (if abs_float x > cutoff then do_compute := true ; x)
) )
@ -334,12 +355,12 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
| Some p2 -> p2 | Some p2 -> p2
in in
for l=0 to np-1 do for l=0 to np-1 do
let fa = (float_of_int axyz) *. expo_inv_p.(l) *. 0.5 in let fa = (float_of_int axyz) *. expo_p_inv.(l) *. 0.5 in
let p2_l = p2.(l) let p2_l = p2.(l)
and v_l = v.(l) and v_l = v.(l)
in in
for k=0 to nq-1 do for k=0 to nq-1 do
p2_l.(k) <- p2_l.(k) -. fa *. expo_inv_q.(k) *. v_l.(k) p2_l.(k) <- p2_l.(k) -. fa *. expo_q_inv.(k) *. v_l.(k)
done done
done; done;
Some p2 Some p2
@ -367,7 +388,7 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
Array.mapi (fun l expo_inv_p_l -> Array.mapi (fun l expo_inv_p_l ->
let expo_p_l = 1./.expo_inv_p_l in let expo_p_l = 1./.expo_inv_p_l in
Array.mapi (fun k expo_inv_q_k -> Array.mapi (fun k expo_inv_q_k ->
expo_inv_q_k *. expo_p_l) expo_inv_q ) expo_inv_p expo_inv_q_k *. expo_p_l) expo_q_inv ) expo_p_inv
in in
let result = None in let result = None in
@ -382,7 +403,7 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
Some (Array.init np (fun l -> Some (Array.init np (fun l ->
let v3_l = v3.(l) in let v3_l = v3.(l) in
Array.mapi (fun k v3_lk -> Array.mapi (fun k v3_lk ->
expo_inv_q.(k) *. f *. v3_lk) v3_l expo_q_inv.(k) *. f *. v3_lk) v3_l
) ) ) )
| Some result, None -> Some result | Some result, None -> Some result
| Some result, Some v3 -> | Some result, Some v3 ->
@ -390,7 +411,7 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
let result_l = result.(l) in let result_l = result.(l) in
Array.iteri (fun k v3_lk -> Array.iteri (fun k v3_lk ->
result_l.(k) <- result_l.(k) +. result_l.(k) <- result_l.(k) +.
expo_inv_q.(k) *. f *. v3_lk) v3_l expo_q_inv.(k) *. f *. v3_lk) v3_l
) v3 ; Some result) ) v3 ; Some result)
end end
in in
@ -460,14 +481,14 @@ let hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
let result_l = result.(l) in let result_l = result.(l) in
Array.iteri (fun k v2_lk -> Array.iteri (fun k v2_lk ->
result_l.(k) <- result_l.(k) +. result_l.(k) <- result_l.(k) +.
expo_inv_q.(k) *. f *. v2_lk) v2_l expo_q_inv.(k) *. f *. v2_lk) v2_l
) v2; Some result) ) v2; Some result)
| None, None -> None | None, None -> None
| None, Some v2 -> | None, Some v2 ->
Some (Array.init np (fun l -> Some (Array.init np (fun l ->
let v2_l = v2.(l) in let v2_l = v2.(l) in
Array.mapi (fun k v2_lk -> Array.mapi (fun k v2_lk ->
expo_inv_q.(k) *. f *. v2_lk) v2_l expo_q_inv.(k) *. f *. v2_lk) v2_l
) ) ) )
end end
in in
@ -599,9 +620,9 @@ let contracted_class_shell_pairs ~zero_m ?schwartz_p ?schwartz_q shell_p shell_q
contracted_class.(0) <- contracted_class.(0) <-
begin begin
try try
let expo_inv_p = let expo_p_inv =
Vec.init np (fun ab -> Psp.exponent_inv sp.(ab-1)) Vec.init np (fun ab -> Psp.exponent_inv sp.(ab-1))
and expo_inv_q = and expo_q_inv =
Vec.init nq (fun cd -> Psp.exponent_inv sq.(cd-1)) Vec.init nq (fun cd -> Psp.exponent_inv sq.(cd-1))
in in
@ -615,8 +636,8 @@ let contracted_class_shell_pairs ~zero_m ?schwartz_p ?schwartz_q shell_p shell_q
if (abs_float coef.{j,i} ) < 1.e-3*.cutoff then if (abs_float coef.{j,i} ) < 1.e-3*.cutoff then
raise NullQuartet; raise NullQuartet;
let expo_pq_inv = let expo_p_inv, expo_q_inv =
expo_inv_p.{i} +. expo_inv_q.{j} expo_p_inv.{i}, expo_q_inv.{j}
in in
let center_pq = let center_pq =
@ -627,7 +648,7 @@ let contracted_class_shell_pairs ~zero_m ?schwartz_p ?schwartz_q shell_p shell_q
in in
let zero_m_array = let zero_m_array =
zero_m ~maxm:0 ~expo_pq_inv ~norm_pq_sq zero_m ~maxm:0 ~expo_p_inv ~expo_q_inv ~norm_pq_sq
in in
zero_m_array.(0) zero_m_array.(0)
with NullQuartet -> 0. with NullQuartet -> 0.
@ -644,9 +665,9 @@ let contracted_class_shell_pairs ~zero_m ?schwartz_p ?schwartz_q shell_p shell_q
let norm = Cspc.norm_scales shell_pair_couple in let norm = Cspc.norm_scales shell_pair_couple in
let expo_inv_p = let expo_p_inv =
Array.map (fun shell_ab -> Psp.exponent_inv shell_ab) sp Array.map (fun shell_ab -> Psp.exponent_inv shell_ab) sp
and expo_inv_q = and expo_q_inv =
Array.map (fun shell_cd -> Psp.exponent_inv shell_cd) sq Array.map (fun shell_cd -> Psp.exponent_inv shell_cd) sq
in in
@ -729,8 +750,8 @@ let contracted_class_shell_pairs ~zero_m ?schwartz_p ?schwartz_q shell_p shell_q
if (abs_float coef.(ab).(cd) < cutoff) then if (abs_float coef.(ab).(cd) < cutoff) then
empty empty
else else
let expo_pq_inv = let expo_p_inv, expo_q_inv =
expo_inv_p.(ab) +. expo_inv_q.(cd) expo_p_inv.(ab), expo_q_inv.(cd)
in in
let norm_pq_sq = let norm_pq_sq =
let x = (center_pq X).(ab).(cd) let x = (center_pq X).(ab).(cd)
@ -740,7 +761,7 @@ let contracted_class_shell_pairs ~zero_m ?schwartz_p ?schwartz_q shell_p shell_q
x *. x +. y *. y +. z *. z x *. x +. y *. y +. z *. z
in in
zero_m ~maxm ~expo_pq_inv ~norm_pq_sq zero_m ~maxm ~expo_p_inv ~expo_q_inv ~norm_pq_sq
) sq ) sq
in in
(* Transpose result *) (* Transpose result *)
@ -799,15 +820,17 @@ let contracted_class_shell_pairs ~zero_m ?schwartz_p ?schwartz_q shell_p shell_q
if schwartz_p *. schwartz_q < cutoff2 then raise NullQuartet; if schwartz_p *. schwartz_q < cutoff2 then raise NullQuartet;
); );
let abcd =
{ expo_b ; expo_d ; expo_p_inv ; expo_q_inv ;
center_ab = Csp.a_minus_b shell_p;
center_cd = Csp.a_minus_b shell_q ;
center_pq ; center_pa ;
center_qc ; zero_m_array }
in
let integral = let integral =
hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d) hvrr_two_e_vector (angMom_a, angMom_b, angMom_c, angMom_d)
zero_m_array abcd map_1d map_2d np nq
(expo_b, expo_d)
(expo_inv_p, expo_inv_q)
(Csp.a_minus_b shell_p,
Csp.a_minus_b shell_q, center_pq)
(center_pa, center_qc)
map_1d map_2d np nq
in in
contracted_class.(i) <- contracted_class.(i) +. integral *. norm.(i) contracted_class.(i) <- contracted_class.(i) +. integral *. norm.(i)
with NullQuartet -> () with NullQuartet -> ()