projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| eaef4d9b | 1 | /* |
| 775a163d | 2 | char id_range[] = "@(#)range.c 1.2"; |
| eaef4d9b DW |
3 | * |
| 4 | * routines to return extreme values | |
| 5 | * VERY MACHINE DEPENDENT | |
| 6 | */ | |
| 7 | ||
| 8 | union fi | |
| 9 | { float f; | |
| 10 | long i; | |
| 11 | } ; | |
| 12 | ||
| 13 | union dj | |
| 14 | { double d; | |
| 15 | long j[2]; | |
| 16 | } ; | |
| 17 | ||
| 18 | float | |
| 19 | flmax_() | |
| 20 | { | |
| 21 | union fi n; | |
| 775a163d | 22 | #if pdp11 |
| eaef4d9b | 23 | n.i = 0x7fffffffL; |
| 775a163d DW |
24 | #else pdp11 |
| 25 | #if vax | |
| eaef4d9b | 26 | n.i = 0xffff7fff; |
| 775a163d DW |
27 | #else vax |
| 28 | UNKNOWN MACHINE! | |
| 29 | #endif vax | |
| 30 | #endif pdp11 | |
| eaef4d9b DW |
31 | return(n.f); |
| 32 | } | |
| 33 | ||
| 34 | double | |
| 35 | dflmax_() | |
| 36 | { | |
| 37 | union dj n; | |
| 775a163d | 38 | #if pdp11 |
| eaef4d9b DW |
39 | n.j[0] = 0x7fffffffL; |
| 40 | n.j[1] = 0xffffffffL; | |
| 775a163d DW |
41 | #else pdp11 |
| 42 | #if vax | |
| eaef4d9b DW |
43 | n.j[0] = 0xffff7fff; |
| 44 | n.j[1] = 0xffffffff; | |
| 775a163d DW |
45 | #else vax |
| 46 | UNKNOWN MACHINE! | |
| 47 | #endif vax | |
| 48 | #endif pdp11 | |
| eaef4d9b DW |
49 | return(n.d); |
| 50 | } | |
| 51 | ||
| 52 | float | |
| 53 | flmin_() | |
| 54 | { | |
| 55 | union fi n; | |
| 775a163d | 56 | #if pdp11 |
| eaef4d9b | 57 | n.i = 0x00800000L; |
| 775a163d DW |
58 | #else pdp11 |
| 59 | #if vax | |
| eaef4d9b | 60 | n.i = 0x00000080; |
| 775a163d DW |
61 | #else vax |
| 62 | UNKNOWN MACHINE! | |
| 63 | #endif vax | |
| 64 | #endif pdp11 | |
| eaef4d9b DW |
65 | return(n.f); |
| 66 | } | |
| 67 | ||
| 68 | double | |
| 69 | dflmin_() | |
| 70 | { | |
| 71 | union dj n; | |
| 775a163d | 72 | #if pdp11 |
| eaef4d9b DW |
73 | n.j[0] = 0x00800000L; |
| 74 | n.j[1] = 0; | |
| 775a163d DW |
75 | #else pdp11 |
| 76 | #if vax | |
| eaef4d9b DW |
77 | n.j[0] = 0x00000080; |
| 78 | n.j[1] = 0; | |
| 775a163d DW |
79 | #else vax |
| 80 | UNKNOWN MACHINE! | |
| 81 | #endif vax | |
| 82 | #endif pdp11 | |
| eaef4d9b DW |
83 | return(n.d); |
| 84 | } | |
| 85 | ||
| 86 | long int | |
| 87 | inmax_() | |
| 88 | { | |
| 775a163d | 89 | return(0x7fffffffL); |
| eaef4d9b DW |
90 | } |
| 91 | ||
| 775a163d DW |
92 | |
| 93 | float | |
| 94 | ffrac_() | |
| 95 | { | |
| 96 | union fi n; | |
| 97 | #if pdp11 | |
| 98 | n.i = 0x35000000L; | |
| 99 | #else pdp11 | |
| 100 | #if vax | |
| 101 | n.i = 0x00003500; | |
| 102 | #else vax | |
| 103 | UNKNOWN MACHINE! | |
| 104 | #endif vax | |
| 105 | #endif pdp11 | |
| 106 | return(n.f); | |
| 107 | } | |
| 108 | ||
| 109 | double | |
| 110 | dffrac_() | |
| 111 | { | |
| 112 | union dj n; | |
| 113 | #if pdp11 | |
| 114 | n.j[0] = 0x25000000L; | |
| 115 | n.j[1] = 0; | |
| 116 | #else pdp11 | |
| 117 | #if vax | |
| 118 | n.j[0] = 0x00002500; | |
| 119 | n.j[1] = 0; | |
| 120 | #else vax | |
| 121 | UNKNOWN MACHINE! | |
| 122 | #endif vax | |
| 123 | #endif pdp11 | |
| 124 | return(n.d); | |
| 125 | } |