diff options
Diffstat (limited to 'arch/mips/math-emu/ieee754d.c')
| -rw-r--r-- | arch/mips/math-emu/ieee754d.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/arch/mips/math-emu/ieee754d.c b/arch/mips/math-emu/ieee754d.c new file mode 100644 index 000000000..586c4db2d --- /dev/null +++ b/arch/mips/math-emu/ieee754d.c | |||
| @@ -0,0 +1,99 @@ | |||
| 1 | // SPDX-License-Identifier: GPL-2.0-only | ||
| 2 | /* | ||
| 3 | * Some debug functions | ||
| 4 | * | ||
| 5 | * MIPS floating point support | ||
| 6 | * | ||
| 7 | * Copyright (C) 1994-2000 Algorithmics Ltd. | ||
| 8 | * | ||
| 9 | * Nov 7, 2000 | ||
| 10 | * Modified to build and operate in Linux kernel environment. | ||
| 11 | * | ||
| 12 | * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com | ||
| 13 | * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. | ||
| 14 | */ | ||
| 15 | |||
| 16 | #include <linux/types.h> | ||
| 17 | #include <linux/printk.h> | ||
| 18 | #include "ieee754.h" | ||
| 19 | #include "ieee754sp.h" | ||
| 20 | #include "ieee754dp.h" | ||
| 21 | |||
| 22 | union ieee754dp ieee754dp_dump(char *m, union ieee754dp x) | ||
| 23 | { | ||
| 24 | int i; | ||
| 25 | |||
| 26 | printk("%s", m); | ||
| 27 | printk("<%08x,%08x>\n", (unsigned) (x.bits >> 32), | ||
| 28 | (unsigned) x.bits); | ||
| 29 | printk("\t="); | ||
| 30 | switch (ieee754dp_class(x)) { | ||
| 31 | case IEEE754_CLASS_QNAN: | ||
| 32 | case IEEE754_CLASS_SNAN: | ||
| 33 | printk("Nan %c", DPSIGN(x) ? '-' : '+'); | ||
| 34 | for (i = DP_FBITS - 1; i >= 0; i--) | ||
| 35 | printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0'); | ||
| 36 | break; | ||
| 37 | case IEEE754_CLASS_INF: | ||
| 38 | printk("%cInfinity", DPSIGN(x) ? '-' : '+'); | ||
| 39 | break; | ||
| 40 | case IEEE754_CLASS_ZERO: | ||
| 41 | printk("%cZero", DPSIGN(x) ? '-' : '+'); | ||
| 42 | break; | ||
| 43 | case IEEE754_CLASS_DNORM: | ||
| 44 | printk("%c0.", DPSIGN(x) ? '-' : '+'); | ||
| 45 | for (i = DP_FBITS - 1; i >= 0; i--) | ||
| 46 | printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0'); | ||
| 47 | printk("e%d", DPBEXP(x) - DP_EBIAS); | ||
| 48 | break; | ||
| 49 | case IEEE754_CLASS_NORM: | ||
| 50 | printk("%c1.", DPSIGN(x) ? '-' : '+'); | ||
| 51 | for (i = DP_FBITS - 1; i >= 0; i--) | ||
| 52 | printk("%c", DPMANT(x) & DP_MBIT(i) ? '1' : '0'); | ||
| 53 | printk("e%d", DPBEXP(x) - DP_EBIAS); | ||
| 54 | break; | ||
| 55 | default: | ||
| 56 | printk("Illegal/Unknown IEEE754 value class"); | ||
| 57 | } | ||
| 58 | printk("\n"); | ||
| 59 | return x; | ||
| 60 | } | ||
| 61 | |||
| 62 | union ieee754sp ieee754sp_dump(char *m, union ieee754sp x) | ||
| 63 | { | ||
| 64 | int i; | ||
| 65 | |||
| 66 | printk("%s=", m); | ||
| 67 | printk("<%08x>\n", (unsigned) x.bits); | ||
| 68 | printk("\t="); | ||
| 69 | switch (ieee754sp_class(x)) { | ||
| 70 | case IEEE754_CLASS_QNAN: | ||
| 71 | case IEEE754_CLASS_SNAN: | ||
| 72 | printk("Nan %c", SPSIGN(x) ? '-' : '+'); | ||
| 73 | for (i = SP_FBITS - 1; i >= 0; i--) | ||
| 74 | printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0'); | ||
| 75 | break; | ||
| 76 | case IEEE754_CLASS_INF: | ||
| 77 | printk("%cInfinity", SPSIGN(x) ? '-' : '+'); | ||
| 78 | break; | ||
| 79 | case IEEE754_CLASS_ZERO: | ||
| 80 | printk("%cZero", SPSIGN(x) ? '-' : '+'); | ||
| 81 | break; | ||
| 82 | case IEEE754_CLASS_DNORM: | ||
| 83 | printk("%c0.", SPSIGN(x) ? '-' : '+'); | ||
| 84 | for (i = SP_FBITS - 1; i >= 0; i--) | ||
| 85 | printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0'); | ||
| 86 | printk("e%d", SPBEXP(x) - SP_EBIAS); | ||
| 87 | break; | ||
| 88 | case IEEE754_CLASS_NORM: | ||
| 89 | printk("%c1.", SPSIGN(x) ? '-' : '+'); | ||
| 90 | for (i = SP_FBITS - 1; i >= 0; i--) | ||
| 91 | printk("%c", SPMANT(x) & SP_MBIT(i) ? '1' : '0'); | ||
| 92 | printk("e%d", SPBEXP(x) - SP_EBIAS); | ||
| 93 | break; | ||
| 94 | default: | ||
| 95 | printk("Illegal/Unknown IEEE754 value class"); | ||
| 96 | } | ||
| 97 | printk("\n"); | ||
| 98 | return x; | ||
| 99 | } | ||