mm->vox integers per AFNI 3dmaskdump INPUT

gistfile1.txt

AFNI 3dmaskdump INPUT
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Appears to use system rounding rint() to convert coordinate floats to integers: 

If user inputs mm coordinates as 3dmaskdump argument, 3dmaskdump converts them to
integer "index coordinates" using serial calls to three functions:
	1) THD_dicomm_to_3dmm() (from thd_coords.c)
	2) THD_3dmm_to_3dfind() (from thd_coords.c)
	3) rint() (from system's buit-in c math, or from faked version in mri_free.c)