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basic implementation for missing functions (signbit/isless/isgreater) in

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older C libraries
This commit is contained in:
gbeauche 2003-09-29 22:45:31 +00:00
parent 1713a26a3f
commit 5229b42622
1 changed files with 29 additions and 0 deletions
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29
SheepShaver/src/kpx_cpu/src/cpu/ppc/ppc-execute.cpp
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@ -749,6 +749,35 @@ void powerpc_cpu::execute_stwcx(uint32 opcode)
increment_pc(4);
}
/**
* Basic (and probably incorrect) implementation for missing functions
* in older C libraries
**/
#ifndef signbit
#define signbit(X) my_signbit(X)
#endif
static inline bool my_signbit(double X) {
return X < 0.0;
}
#ifndef isless
#define isless(X, Y) my_isless(X, Y)
#endif
static inline bool my_isless(double X, double Y) {
return X < Y;
}
#ifndef isgreater
#define isgreater(X, Y) my_isgreater(X, Y)
#endif
static inline bool my_isgreater(double X, double Y) {
return X > Y;
}
/**
* Floating-point compare instruction
*