Last change
on this file was
444,
checked in by satin@…, 6 years ago
|
add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
|
File size:
691 bytes
|
Rev | Line | |
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[444] | 1 | /* |
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| 2 | * return (*acc) scaled by 10**dexp. |
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| 3 | */ |
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| 4 | |
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| 5 | #include <_ansi.h> |
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| 6 | #include <reent.h> |
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| 7 | #include "std.h" |
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| 8 | |
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| 9 | #define abs(x) (((x) < 0) ? -(x) : (x)) |
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| 10 | |
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| 11 | double |
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| 12 | __adjust (struct _reent *ptr, |
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| 13 | double *acc, |
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| 14 | int dexp, |
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| 15 | int sign) |
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| 16 | /* *acc the 64 bit accumulator */ |
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| 17 | /* dexp decimal exponent */ |
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| 18 | /* sign sign flag */ |
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| 19 | { |
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| 20 | double r; |
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| 21 | |
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| 22 | if (dexp > MAXE) |
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| 23 | { |
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| 24 | ptr->_errno = ERANGE; |
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| 25 | return (sign) ? -HUGE_VAL : HUGE_VAL; |
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| 26 | } |
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| 27 | else if (dexp < MINE) |
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| 28 | { |
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| 29 | ptr->_errno = ERANGE; |
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| 30 | return 0.0; |
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| 31 | } |
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| 32 | |
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| 33 | r = *acc; |
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| 34 | if (sign) |
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| 35 | r = -r; |
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| 36 | if (dexp == 0) |
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| 37 | return r; |
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| 38 | |
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| 39 | if (dexp < 0) |
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| 40 | return r / __exp10 (abs (dexp)); |
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| 41 | else |
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| 42 | return r * __exp10 (dexp); |
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| 43 | } |
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