`specfem::source_time_functions::Heaviside`¶

class Heaviside : public specfem::source_time_functions::stf ¶

Heaviside step function source time function.

Represents a step function that transitions from 0 to 1 over a specified duration.

Public Functions

Heaviside(const int nsteps, const type_real dt, const type_real hdur, const type_real tshift, const type_real factor, const bool use_trick_for_better_pressure, const type_real t0_factor = 2.0)¶

Construct a Heaviside step function source time function.

Parameters:

nsteps – Number of time steps
dt – Time step size
hdur – Half duration
tshift – Time shift value
factor – Scaling factor
use_trick_for_better_pressure – Use pressure optimization trick
t0_factor – Start time factor (default: 2.0)

Heaviside(YAML::Node &HeavisideNode, const int nsteps, const type_real dt, const bool use_trick_for_better_pressure, const type_real t0_factor = 2.0)¶

Construct a Heaviside source time function from YAML configuration.

Parameters:

HeavisideNode – YAML node with Heaviside parameters
nsteps – Number of time steps
dt – Time step size
use_trick_for_better_pressure – Use pressure optimization trick
t0_factor – Start time factor (default: 2.0)

type_real compute(type_real t)¶

Compute source time function value at time t.

Parameters:: t – Time value
Returns:: Source time function value

inline virtual void update_tshift(type_real tshift) override¶

Update the time shift value.

Parameters:: tshift – New time shift value

inline virtual type_real get_t0() const override¶

Get start time value.

Returns:: Start time t0

inline virtual type_real get_tshift() const override¶

Get the time shift value.

Returns:: Time shift value

virtual std::string print() const override¶

Get string representation of the source time function.

Returns:: String describing the STF parameters

virtual void compute_source_time_function(const type_real t0, const type_real dt, const int nsteps, Kokkos::View<type_real**, Kokkos::LayoutRight, Kokkos::HostSpace> source_time_function) override¶

Compute source time function values for all time steps.

Parameters:

t0 – Start time
dt – Time step size
nsteps – Number of time steps
source_time_function – Output view to store computed values

virtual bool operator==(const stf &other) const override¶

Equality operator.

Parameters:: other – Another source time function to compare with
Returns:: true if equal, false otherwise

virtual bool operator!=(const stf &other) const override¶

Inequality operator.

Parameters:: other – Another source time function to compare with
Returns:: true if not equal, false otherwise

specfem::source_time_functions::Heaviside¶

`specfem::source_time_functions::Heaviside`¶