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X-Hacker.org- Zortech C++ Language Reference - _8087
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_8087
Each time a program begins execution, a determination is made as to
whether an 8087 or 80287 co-processor is present. If present, all
floating point calculations are performed using it. If not present,
all floating point calculations are performed by software emulation.
The _8087 global variable defined in c.asm, can be tested to see if an
8087/80287 is present. If the _8087 variable is equal to 0, there is
no 8087 present. A value of 1 indicates that either an 8087 or an
80287 has been found. A value of 3 means that an 80387 is present.
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