;+ ;FUNCTION: ; MVN_SWIA_SUBWORD ;PURPOSE: ; Function to return a portion of a word ;AUTHOR: ; Jasper Halekas ;CALLING SEQUENCE: ; Result = MVN_SWIA_SUBWORD(Word,BIT1 = 7, BIT2 = 0) ;INPUTS: ; Word: the input word ;KEYWORDS: ; BIT1: The bit to start from (inclusive), from 15 to 0, default 15 ; BIT2: The bit to end at (inclusive), from 15 to 0, default 0 ;OUTPUTS: ; Returns the value formed by the bits from ['bit1','bit2'] of 'word' ; ; $LastChangedBy: jhalekas $ ; $LastChangedDate: 2013-06-18 21:19:24 -0700 (Tue, 18 Jun 2013) $ ; $LastChangedRevision: 12551 $ ; $URL: svn+ssh://thmsvn@ambrosia.ssl.berkeley.edu/repos/spdsoft/trunk/projects/maven/swia/mvn_swia_subword.pro $ ; ;- function mvn_swia_subword, word, bit1 = bit1, bit2 = bit2 compile_opt idl2 if not keyword_set(bit1) then bit1 = 15 if not keyword_set(bit2) then bit2 = 0 len = bit1-bit2 + 1 sub1 = floor(word/2L^bit2) sub2 = sub1 mod (2L^len) return,sub2 end