projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 59fd1272 SL |
1 | /* @(#)util.c 4.1 %G% */ |
| 2 | ||
| 3 | char *malloc(); | |
| 4 | #ifdef lint | |
| 5 | int xv_oid; | |
| 6 | #endif | |
| 7 | #include <stdio.h> | |
| 8 | #include <mp.h> | |
| 9 | move(a,b) MINT *a,*b; | |
| 10 | { int i,j; | |
| 11 | xfree(b); | |
| 12 | b->len=a->len; | |
| 13 | if((i=a->len)<0) i = -i; | |
| 14 | if(i==0) return; | |
| 15 | b->val=xalloc(i,"move"); | |
| 16 | for(j=0;j<i;j++) | |
| 17 | b->val[j]=a->val[j]; | |
| 18 | return; | |
| 19 | } | |
| 20 | dummy(){} | |
| 21 | short *xalloc(nint,s) char *s; | |
| 22 | { short *i; | |
| 23 | i=(short *)malloc(2*(unsigned)nint+4); | |
| 24 | #ifdef DBG | |
| 25 | if(dbg) fprintf(stderr, "%s: %o\n",s,i); | |
| 26 | #endif | |
| 27 | if(i!=NULL) return(i); | |
| 28 | fatal("mp: no free space"); | |
| 29 | return(0); | |
| 30 | } | |
| 31 | fatal(s) char *s; | |
| 32 | { | |
| 33 | fprintf(stderr,"%s\n",s); | |
| 34 | VOID fflush(stdout); | |
| 35 | sleep(2); | |
| 36 | abort(); | |
| 37 | } | |
| 38 | xfree(c) MINT *c; | |
| 39 | { | |
| 40 | #ifdef DBG | |
| 41 | if(dbg) fprintf(stderr, "xfree "); | |
| 42 | #endif | |
| 43 | if(c->len==0) return; | |
| 44 | shfree(c->val); | |
| 45 | c->len=0; | |
| 46 | return; | |
| 47 | } | |
| 48 | mcan(a) MINT *a; | |
| 49 | { int i,j; | |
| 50 | if((i=a->len)==0) return; | |
| 51 | else if(i<0) i= -i; | |
| 52 | for(j=i;j>0 && a->val[j-1]==0;j--); | |
| 53 | if(j==i) return; | |
| 54 | if(j==0) | |
| 55 | { xfree(a); | |
| 56 | return; | |
| 57 | } | |
| 58 | if(a->len > 0) a->len=j; | |
| 59 | else a->len = -j; | |
| 60 | } | |
| 61 | MINT *itom(n) | |
| 62 | { MINT *a; | |
| 63 | a=(MINT *)xalloc(2,"itom"); | |
| 64 | if(n>0) | |
| 65 | { a->len=1; | |
| 66 | a->val=xalloc(1,"itom1"); | |
| 67 | *a->val=n; | |
| 68 | return(a); | |
| 69 | } | |
| 70 | else if(n<0) | |
| 71 | { a->len = -1; | |
| 72 | a->val=xalloc(1,"itom2"); | |
| 73 | *a->val= -n; | |
| 74 | return(a); | |
| 75 | } | |
| 76 | else | |
| 77 | { a->len=0; | |
| 78 | return(a); | |
| 79 | } | |
| 80 | } | |
| 81 | mcmp(a,b) MINT *a,*b; | |
| 82 | { MINT c; | |
| 83 | int res; | |
| 84 | if(a->len!=b->len) return(a->len-b->len); | |
| 85 | c.len=0; | |
| 86 | msub(a,b,&c); | |
| 87 | res=c.len; | |
| 88 | xfree(&c); | |
| 89 | return(res); | |
| 90 | } |