FPEmulator_ChangeContext (changes)

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FPEmulator

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» FPEmulator_ChangeContext

FPEmulator_ChangeContext

(SWI &40483)

Use

The purpose of this call is the standard way of changing context.

Notes

This call is the standard way of changing context. A floating point context pointer is passed to it as an argument. It switches over to using this as the current context and returns a pointer to the previous floating point context.
It is an atomic equivalent to FPEmulator_DeactivateContext followed by FPEmulator_ActivateContext.

Either pointer may be zero: this indicates that the floating point system was/should be in a completely inactive state, with no current floating point context, its undefined instruction handlers not installed, etc.

Contexts are only available from FPEmulator 4.12 and later.

See also

• Floating Point Contexts
• FPEmulator_ActivateContext
• FPEmulator_DeactivateContext