source:
trunk/minix/lib/ack/math/isnan.c@
20
| Last change on this file since 20 was 9, checked in by , 14 years ago | |
|---|---|
| File size: 201 bytes | |
| Line | |
|---|---|
| 1 | int __IsNan(double d) |
| 2 | { |
| 3 | #if defined(vax) || defined(pdp) |
| 4 | #else |
| 5 | float f = d; |
| 6 | |
| 7 | if ((*((long *) &f) & 0x7f800000) == 0x7f800000 && |
| 8 | (*((long *) &f) & 0x007fffff) != 0) return 1; |
| 9 | #endif |
| 10 | return 0; |
| 11 | } |
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