Installing Qiskit
Getting Started with Qiskit
The Qiskit Elements
Development Strategy
Contributing to Qiskit
Release Notes
Frequently Asked Questions

Tutorials

Circuits
Advanced Circuits
High-Performance Simulators
Quantum System Error Analysis
Optimization

Libraries

Circuit Library
- Circuit Library (qiskit.circuit.library)
  - Standard Gates
    - Barrier
    - C3XGate
    - C4XGate
    - CCXGate
    - DCXGate
    - CHGate
    - CRXGate
    - CRYGate
    - CRZGate
    - CSwapGate
    - CU1Gate
    - CU3Gate
    - CXGate
    - CYGate
    - CZGate
    - HGate
    - IGate
    - Measure
    - MSGate
    - RCCXGate
    - RC3XGate
    - Reset
    - RXGate
    - RXXGate
    - RYGate
    - RYYGate
    - RZGate
    - RZZGate
    - RZXGate
    - SGate
    - SdgGate
    - SwapGate
    - iSwapGate
    - TGate
    - TdgGate
    - U1Gate
    - U2Gate
    - U3Gate
    - XGate
    - YGate
    - ZGate
  - Generalized Gates
  - Boolean Logic Circuits
  - Basis Change Circuits
  - Arithmetic Circuits
  - Particular Quantum Circuits
  - N-local circuits
  - Data encoding circuits

API References

Qiskit Terra
Qiskit Aer
Qiskit Ignis
Qiskit Aqua
Qiskit IBM Quantum Provider

Troubleshooting

Quantum Experience API error codes

Qiskit

»
Circuit Library »
Barrier »
Barrier.c_if
View page source

Barrier.c_if¶

Barrier.c_if(classical, val)[source]¶: Add classical condition on register classical and value val.

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