Mercurial > hg > CbC > old > device

comparison mc-codegen.c @ 790:a26d87f93c65

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i64 bitfiled
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sun, 21 Nov 2010 23:03:37 +0900
parents 9b1558a9151b
children 3622e3f561db
comparison
equal deleted inserted replaced
789:9b1558a9151b 790:a26d87f93c65
5527 5527
5528 /* 5528 /*
5529 make bit mask 5529 make bit mask
5530 MSB 1 2 3 4 .... 29 30 31 LSB 5530 MSB 1 2 3 4 .... 29 30 31 LSB
5531 */ 5531 */
5532 extern unsigned
5533 make_mask(int from,int to)
5534 {
5535 unsigned mask = 0;
5536 unsigned bit = 1;
5537 int i;
5538 if (from<0||from>31) error(-1);
5539 for (i=31;from<=i;i--,bit<<=1) {
5540 if (i<=to) {
5541 mask |= bit;
5542 }
5543 }
5544 return mask;
5545 }
5546
5532 extern unsigned long long 5547 extern unsigned long long
5533 make_mask(int from,int to) 5548 make_mask_64(int from,int to)
5534 { 5549 {
5535 unsigned long long mask = 0; 5550 unsigned long long mask = 0;
5536 unsigned long long bit = 1; 5551 unsigned long long bit = 1;
5537 int i; 5552 int i;
5538 if (from<0||from>63) error(-1); 5553 if (from<0||from>63) error(-1);