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Last change
on this file since 577 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
625 bytes
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| 1 | /* |
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| 2 | * difftime.c |
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| 3 | * Original Author: G. Haley |
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| 4 | */ |
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| 5 | |
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| 6 | /* |
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| 7 | FUNCTION |
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| 8 | <<difftime>>---subtract two times |
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| 9 | |
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| 10 | INDEX |
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| 11 | difftime |
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| 12 | |
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| 13 | SYNOPSIS |
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| 14 | #include <time.h> |
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| 15 | double difftime(time_t <[tim1]>, time_t <[tim2]>); |
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| 16 | |
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| 17 | DESCRIPTION |
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| 18 | Subtracts the two times in the arguments: `<<<[tim1]> - <[tim2]>>>'. |
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| 19 | |
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| 20 | RETURNS |
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| 21 | The difference (in seconds) between <[tim2]> and <[tim1]>, as a <<double>>. |
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| 22 | |
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| 23 | PORTABILITY |
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| 24 | ANSI C requires <<difftime>>, and defines its result to be in seconds |
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| 25 | in all implementations. |
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| 26 | |
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| 27 | <<difftime>> requires no supporting OS subroutines. |
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| 28 | */ |
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| 29 | |
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| 30 | #include <time.h> |
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| 31 | |
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| 32 | double |
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| 33 | difftime (time_t tim1, |
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| 34 | time_t tim2) |
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| 35 | { |
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| 36 | return (double)(tim1 - tim2); |
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| 37 | } |
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