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Merged
merged 18 commits into from
May 12, 2025
Merged

Add support for knapsack constraints #975

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8a9af4f
Add support for knapsack constraints
Joao-Dionisio Apr 16, 2025
c1c371b
remove useless asserts
Joao-Dionisio Apr 16, 2025
fd02909
Standardize knapsack with other constypes
Joao-Dionisio Apr 17, 2025
ce7bcad
Merge branch 'master' into other-con-types
Joao-Dionisio Apr 22, 2025
8dc24f8
Remove handler name from default constraint name
Joao-Dionisio Apr 22, 2025
ec2bb2b
Merge branch 'other-con-types' of https://github.com/scipopt/PySCIPOp…
Joao-Dionisio Apr 22, 2025
8418d13
Merge branch 'master' of https://github.com/scipopt/PySCIPOpt into ot…
Joao-Dionisio May 7, 2025
9c7659c
Remove redeclaration
Joao-Dionisio May 7, 2025
55d50cc
minor bugfixing
Joao-Dionisio May 10, 2025
5b0d371
Merge branch 'master' of https://github.com/scipopt/PySCIPOpt into ot…
Joao-Dionisio May 10, 2025
ba7321c
Fix stupid bug
Joao-Dionisio May 10, 2025
34a6b4f
Everything seems alright now
Joao-Dionisio May 10, 2025
7b3abfa
copilot
Joao-Dionisio May 10, 2025
8ef7ede
typo
Joao-Dionisio May 10, 2025
13232ab
all good now
Joao-Dionisio May 10, 2025
a427839
remove knapsack getrhs
Joao-Dionisio May 12, 2025
f66235e
Add assert
Joao-Dionisio May 12, 2025
701acdb
remove get/setRhs
Joao-Dionisio May 12, 2025
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

## Unreleased
### Added
- Added support for knapsack constraints
### Fixed
### Changed
### Removed
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31 changes: 31 additions & 0 deletions src/pyscipopt/scip.pxd
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Expand Up @@ -1474,6 +1474,37 @@ cdef extern from "scip/cons_linear.h":
SCIP_Real* SCIPgetValsLinear(SCIP* scip, SCIP_CONS* cons)
SCIP_ROW* SCIPgetRowLinear(SCIP* scip, SCIP_CONS* cons)

cdef extern from "scip/cons_knapsack.h":
SCIP_RETCODE SCIPcreateConsKnapsack(SCIP* scip,
SCIP_CONS** cons,
char* name,
int nvars,
SCIP_VAR** vars,
SCIP_Longint* weights,
SCIP_Longint capacity,
SCIP_Bool initial,
SCIP_Bool separate,
SCIP_Bool enforce,
SCIP_Bool check,
SCIP_Bool propagate,
SCIP_Bool local,
SCIP_Bool modifiable,
SCIP_Bool dynamic,
SCIP_Bool removable,
SCIP_Bool stickingatnode)
SCIP_RETCODE SCIPaddCoefKnapsack(SCIP* scip,
SCIP_CONS* cons,
SCIP_VAR* var,
SCIP_Longint val)

SCIP_Real SCIPgetDualsolKnapsack(SCIP* scip, SCIP_CONS* cons)
SCIP_Real SCIPgetDualfarkasKnapsack(SCIP* scip, SCIP_CONS* cons)
SCIP_RETCODE SCIPchgCapacityKnapsack(SCIP* scip, SCIP_CONS* cons, SCIP_Real rhs)
SCIP_Longint SCIPgetCapacityKnapsack(SCIP* scip, SCIP_CONS* cons)
SCIP_VAR** SCIPgetVarsKnapsack(SCIP* scip, SCIP_CONS* cons)
int SCIPgetNVarsKnapsack(SCIP* scip, SCIP_CONS* cons)
SCIP_Longint* SCIPgetWeightsKnapsack(SCIP* scip, SCIP_CONS* cons)

cdef extern from "scip/cons_nonlinear.h":
SCIP_EXPR* SCIPgetExprNonlinear(SCIP_CONS* cons)
SCIP_RETCODE SCIPcreateConsNonlinear(SCIP* scip,
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