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ssGetdX

Get the derivatives of a block's continuous states

Syntax

real_T *ssGetdX(SimStruct *S)

Arguments

S

SimStruct representing an S-Function block or Simulink® model.

Returns

A pointer (real_T *) to an array containing the derivatives of the continuous states of S, which can be a block or the model. Returns NULL if there are no continuous states.

Description

Use this macro in mdlDerivatives to get the derivatives of a model or block's continuous states. Use ssGetNumContStates(S) to get the length of the array.

    Note   The pointer returned by this macro changes as the solver evaluates different integration stages to compute the integral.

Languages

C, C++

Example

See the S-function csfunc.ccsfunc.c used in sfcndemo_csfuncsfcndemo_csfunc and the S-function sfun_atol.csfun_atol.c used in sfcndemo_sfun_atolsfcndemo_sfun_atol for examples using this function.

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