| 1 | /* ----------------------------------------------------------------------- * |
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| 2 | * |
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| 3 | * Copyright 2007-2009 H. Peter Anvin - All Rights Reserved |
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| 4 | * Copyright 2009 Intel Corporation; author: H. Peter Anvin |
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| 5 | * |
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| 6 | * Permission is hereby granted, free of charge, to any person |
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| 7 | * obtaining a copy of this software and associated documentation |
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| 8 | * files (the "Software"), to deal in the Software without |
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| 9 | * restriction, including without limitation the rights to use, |
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| 10 | * copy, modify, merge, publish, distribute, sublicense, and/or |
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| 11 | * sell copies of the Software, and to permit persons to whom |
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| 12 | * the Software is furnished to do so, subject to the following |
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| 13 | * conditions: |
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| 14 | * |
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| 15 | * The above copyright notice and this permission notice shall |
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| 16 | * be included in all copies or substantial portions of the Software. |
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| 17 | * |
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| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
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| 20 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 21 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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| 22 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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| 23 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 24 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 25 | * OTHER DEALINGS IN THE SOFTWARE. |
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| 26 | * |
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| 27 | * ----------------------------------------------------------------------- */ |
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| 28 | |
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| 29 | /* |
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| 30 | * suffix_number.c |
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| 31 | * |
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| 32 | * Convert a string of a number with potential SI suffix to int-type |
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| 33 | */ |
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| 34 | |
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| 35 | #include <stdlib.h> |
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| 36 | #include <suffix_number.h> |
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| 37 | |
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| 38 | /* Get a value with a potential suffix (k/m/g/t/p/e) */ |
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| 39 | unsigned long long suffix_number(const char *str) |
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| 40 | { |
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| 41 | char *ep; |
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| 42 | unsigned long long v; |
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| 43 | int shift; |
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| 44 | |
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| 45 | v = strtoull(str, &ep, 0); |
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| 46 | switch (*ep | 0x20) { |
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| 47 | case 'k': |
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| 48 | shift = 10; |
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| 49 | break; |
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| 50 | case 'm': |
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| 51 | shift = 20; |
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| 52 | break; |
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| 53 | case 'g': |
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| 54 | shift = 30; |
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| 55 | break; |
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| 56 | case 't': |
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| 57 | shift = 40; |
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| 58 | break; |
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| 59 | case 'p': |
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| 60 | shift = 50; |
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| 61 | break; |
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| 62 | case 'e': |
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| 63 | shift = 60; |
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| 64 | break; |
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| 65 | default: |
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| 66 | shift = 0; |
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| 67 | break; |
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| 68 | } |
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| 69 | v <<= shift; |
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| 70 | |
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| 71 | return v; |
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| 72 | } |
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