mtlb_int16

Description

Matlab and Scilab int16 behave differently :

• Beyong the main interval bounds, Scilab's int16() wraps, while Matlab's mtlb_int16() saturates.
• For non integer values, Scilab's int16() truncates the fractional part, while Matlab's mtlb_int16() rounds to the nearest integer.

x	int16(x)	mtlb_int16(x)
%nan	0	0
-%inf	-32768	-32768
-32770	+32766	-32768
-32769	+32767	-32768
-32768	-32768	-32768
-32767	-32767	-32767
-80.7	-80	-81
-80.5	-80	-81
-80.4	-80	-80
10.2	10	10
10.5	10	11
10.51	10	11
32767	+32767	32767
32768	-32768	32767
32769	-32767	32767
32770	-32766	32767
%inf	+32767	32767

mtlb_int16 has not to be used for hand coded functions. The function mtlb_int16(A) is used by mfile2sci to replace int16(A) when it is not possible to know what is the input while porting Matlab code to Scilab. This function then determines the correct semantic at run time.