Chapter 11. Integrating External Routines

Revision History
Revision V6.1-000	28 August 2014	In “Access to Non-M Routines”, added information about the external call arguments that do not specify a value and corrected the examples. In “Using External Calls”, added a note about how arguments that do not specify a value translate to default values in C.
Revision V6.0-003	24 February 2014	Improved the description of the “Pre-allocation of Output Parameters” section. In “Rules to Follow in Call-Ins”, added a recommendation to not mix GT.M device input using read() system service with bufferred input services in fgets() family. Added a section called “Type Limits for Call-ins and Call-outs”.
Revision V6.0-001	21 March 2013	In “Using External Calls” and “gtmxc_types.h”, added information about V6.0-001 enhancements for gtmxc_types.h.
Revision V5.5-000/1	05 October 2012	In “Callback Mechanism”, corrected the type of the space-needed parameter of the gtm_malloc() function.
Revision V5.4-002B/1	20 May 2012	In “Pre-allocation of Output Parameters”, specified that output-only gtm_string_t * and char * parameters require pre-allocation.
Revision V5.4-002B	26 December 2011	Conversion to documentation revision history reflecting GT.M releases with revision history for each chapter.

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