am 4779a11a
: Merge "Move mips fenv implementation details into fenv.c."
* commit '4779a11a3dfa7314b3cb3998b1f9172c40dfc5f6': Move mips fenv implementation details into fenv.c.
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commit
936ea9a1ce
@ -87,19 +87,12 @@ typedef __uint32_t fexcept_t;
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#define FE_ALL_EXCEPT (FE_DIVBYZERO | FE_INEXACT | \
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FE_INVALID | FE_OVERFLOW | FE_UNDERFLOW)
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#define _FCSR_CAUSE_SHIFT 10
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#define _ENABLE_SHIFT 5
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#define _FCSR_ENABLE_MASK (FE_ALL_EXCEPT << _ENABLE_SHIFT)
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/* Rounding modes */
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#define FE_TONEAREST 0x0000
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#define FE_TOWARDZERO 0x0001
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#define FE_UPWARD 0x0002
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#define FE_DOWNWARD 0x0003
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#define _FCSR_RMODE_SHIFT 0
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#define _FCSR_RMASK 0x3
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__END_DECLS
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#endif /* !_MIPS_FENV_H_ */
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@ -28,6 +28,12 @@
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#include <fenv.h>
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#define FCSR_CAUSE_SHIFT 10
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#define FCSR_ENABLE_SHIFT 5
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#define FCSR_ENABLE_MASK (FE_ALL_EXCEPT << FCSR_ENABLE_SHIFT)
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#define FCSR_RMASK 0x3
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/*
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* Hopefully the system ID byte is immutable, so it's valid to use
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* this as a default environment.
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@ -55,7 +61,7 @@ int feclearexcept(int __excepts) {
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fexcept_t __fcsr;
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fegetenv(&__fcsr);
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__excepts &= FE_ALL_EXCEPT;
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__fcsr &= ~(__excepts | (__excepts << _FCSR_CAUSE_SHIFT));
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__fcsr &= ~(__excepts | (__excepts << FCSR_CAUSE_SHIFT));
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fesetenv(&__fcsr);
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return 0;
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}
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@ -84,7 +90,7 @@ int feraiseexcept(int __excepts) {
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/* Ensure that flags are all legal */
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__excepts &= FE_ALL_EXCEPT;
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/* Cause bit needs to be set as well for generating the exception*/
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__fcsr |= __excepts | (__excepts << _FCSR_CAUSE_SHIFT);
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__fcsr |= __excepts | (__excepts << FCSR_CAUSE_SHIFT);
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fesetenv(&__fcsr);
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return 0;
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}
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@ -98,14 +104,14 @@ int fetestexcept(int __excepts) {
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int fegetround(void) {
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fenv_t _fcsr;
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fegetenv(&_fcsr);
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return (_fcsr & _FCSR_RMASK);
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return (_fcsr & FCSR_RMASK);
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}
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int fesetround(int __round) {
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fenv_t _fcsr;
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fegetenv(&_fcsr);
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_fcsr &= ~_FCSR_RMASK;
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_fcsr |= (__round & _FCSR_RMASK ) ;
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_fcsr &= ~FCSR_RMASK;
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_fcsr |= (__round & FCSR_RMASK);
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fesetenv(&_fcsr);
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return 0;
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}
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@ -114,7 +120,7 @@ int feholdexcept(fenv_t* __envp) {
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fenv_t __env;
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fegetenv(&__env);
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*__envp = __env;
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__env &= ~(FE_ALL_EXCEPT | _FCSR_ENABLE_MASK);
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__env &= ~(FE_ALL_EXCEPT | FCSR_ENABLE_MASK);
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fesetenv(&__env);
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return 0;
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}
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@ -130,21 +136,21 @@ int feupdateenv(const fenv_t* __envp) {
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int feenableexcept(int __mask) {
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fenv_t __old_fcsr, __new_fcsr;
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fegetenv(&__old_fcsr);
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__new_fcsr = __old_fcsr | (__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT;
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__new_fcsr = __old_fcsr | (__mask & FE_ALL_EXCEPT) << FCSR_ENABLE_SHIFT;
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fesetenv(&__new_fcsr);
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return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
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return ((__old_fcsr >> FCSR_ENABLE_SHIFT) & FE_ALL_EXCEPT);
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}
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int fedisableexcept(int __mask) {
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fenv_t __old_fcsr, __new_fcsr;
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fegetenv(&__old_fcsr);
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__new_fcsr = __old_fcsr & ~((__mask & FE_ALL_EXCEPT) << _ENABLE_SHIFT);
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__new_fcsr = __old_fcsr & ~((__mask & FE_ALL_EXCEPT) << FCSR_ENABLE_SHIFT);
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fesetenv(&__new_fcsr);
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return ((__old_fcsr >> _ENABLE_SHIFT) & FE_ALL_EXCEPT);
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return ((__old_fcsr >> FCSR_ENABLE_SHIFT) & FE_ALL_EXCEPT);
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}
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int fegetexcept(void) {
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fenv_t __fcsr;
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fegetenv(&__fcsr);
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return ((__fcsr & _FCSR_ENABLE_MASK) >> _ENABLE_SHIFT);
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return ((__fcsr & FCSR_ENABLE_MASK) >> FCSR_ENABLE_SHIFT);
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}
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