projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| eaef4d9b | 1 | /* |
| be6e3ddf RE |
2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement | |
| 4 | * specifies the terms and conditions for redistribution. | |
| eaef4d9b | 5 | * |
| bb3ec388 RE |
6 | * @(#)range.c 5.2 %G% |
| 7 | * | |
| eaef4d9b DW |
8 | * routines to return extreme values |
| 9 | * VERY MACHINE DEPENDENT | |
| 10 | */ | |
| 11 | ||
| 12 | union fi | |
| 13 | { float f; | |
| 14 | long i; | |
| 15 | } ; | |
| 16 | ||
| 17 | union dj | |
| 18 | { double d; | |
| 19 | long j[2]; | |
| 20 | } ; | |
| 21 | ||
| 22 | float | |
| 23 | flmax_() | |
| 24 | { | |
| 25 | union fi n; | |
| 775a163d | 26 | #if pdp11 |
| eaef4d9b | 27 | n.i = 0x7fffffffL; |
| 775a163d DW |
28 | #else pdp11 |
| 29 | #if vax | |
| eaef4d9b | 30 | n.i = 0xffff7fff; |
| 775a163d DW |
31 | #else vax |
| 32 | UNKNOWN MACHINE! | |
| 33 | #endif vax | |
| 34 | #endif pdp11 | |
| eaef4d9b DW |
35 | return(n.f); |
| 36 | } | |
| 37 | ||
| 38 | double | |
| 39 | dflmax_() | |
| 40 | { | |
| 41 | union dj n; | |
| 775a163d | 42 | #if pdp11 |
| eaef4d9b DW |
43 | n.j[0] = 0x7fffffffL; |
| 44 | n.j[1] = 0xffffffffL; | |
| 775a163d DW |
45 | #else pdp11 |
| 46 | #if vax | |
| eaef4d9b DW |
47 | n.j[0] = 0xffff7fff; |
| 48 | n.j[1] = 0xffffffff; | |
| 775a163d DW |
49 | #else vax |
| 50 | UNKNOWN MACHINE! | |
| 51 | #endif vax | |
| 52 | #endif pdp11 | |
| eaef4d9b DW |
53 | return(n.d); |
| 54 | } | |
| 55 | ||
| 56 | float | |
| 57 | flmin_() | |
| 58 | { | |
| 59 | union fi n; | |
| 775a163d | 60 | #if pdp11 |
| eaef4d9b | 61 | n.i = 0x00800000L; |
| 775a163d DW |
62 | #else pdp11 |
| 63 | #if vax | |
| eaef4d9b | 64 | n.i = 0x00000080; |
| 775a163d DW |
65 | #else vax |
| 66 | UNKNOWN MACHINE! | |
| 67 | #endif vax | |
| 68 | #endif pdp11 | |
| eaef4d9b DW |
69 | return(n.f); |
| 70 | } | |
| 71 | ||
| 72 | double | |
| 73 | dflmin_() | |
| 74 | { | |
| 75 | union dj n; | |
| 775a163d | 76 | #if pdp11 |
| eaef4d9b DW |
77 | n.j[0] = 0x00800000L; |
| 78 | n.j[1] = 0; | |
| 775a163d DW |
79 | #else pdp11 |
| 80 | #if vax | |
| eaef4d9b DW |
81 | n.j[0] = 0x00000080; |
| 82 | n.j[1] = 0; | |
| 775a163d DW |
83 | #else vax |
| 84 | UNKNOWN MACHINE! | |
| 85 | #endif vax | |
| 86 | #endif pdp11 | |
| eaef4d9b DW |
87 | return(n.d); |
| 88 | } | |
| 89 | ||
| 90 | long int | |
| 91 | inmax_() | |
| 92 | { | |
| 775a163d | 93 | return(0x7fffffffL); |
| eaef4d9b DW |
94 | } |
| 95 | ||
| 775a163d DW |
96 | |
| 97 | float | |
| 98 | ffrac_() | |
| 99 | { | |
| 100 | union fi n; | |
| 101 | #if pdp11 | |
| 102 | n.i = 0x35000000L; | |
| 103 | #else pdp11 | |
| 104 | #if vax | |
| 105 | n.i = 0x00003500; | |
| 106 | #else vax | |
| 107 | UNKNOWN MACHINE! | |
| 108 | #endif vax | |
| 109 | #endif pdp11 | |
| 110 | return(n.f); | |
| 111 | } | |
| 112 | ||
| 113 | double | |
| 114 | dffrac_() | |
| 115 | { | |
| 116 | union dj n; | |
| 117 | #if pdp11 | |
| 118 | n.j[0] = 0x25000000L; | |
| 119 | n.j[1] = 0; | |
| 120 | #else pdp11 | |
| 121 | #if vax | |
| 122 | n.j[0] = 0x00002500; | |
| 123 | n.j[1] = 0; | |
| 124 | #else vax | |
| 125 | UNKNOWN MACHINE! | |
| 126 | #endif vax | |
| 127 | #endif pdp11 | |
| 128 | return(n.d); | |
| 129 | } |