diff options
Diffstat (limited to 'arch/x86/math-emu/reg_convert.c')
| -rw-r--r-- | arch/x86/math-emu/reg_convert.c | 57 |
1 files changed, 25 insertions, 32 deletions
diff --git a/arch/x86/math-emu/reg_convert.c b/arch/x86/math-emu/reg_convert.c index 45a25875270..10806077997 100644 --- a/arch/x86/math-emu/reg_convert.c +++ b/arch/x86/math-emu/reg_convert.c @@ -13,41 +13,34 @@ #include "exception.h" #include "fpu_emu.h" - int FPU_to_exp16(FPU_REG const *a, FPU_REG *x) { - int sign = getsign(a); - - *(long long *)&(x->sigl) = *(const long long *)&(a->sigl); - - /* Set up the exponent as a 16 bit quantity. */ - setexponent16(x, exponent(a)); - - if ( exponent16(x) == EXP_UNDER ) - { - /* The number is a de-normal or pseudodenormal. */ - /* We only deal with the significand and exponent. */ - - if (x->sigh & 0x80000000) - { - /* Is a pseudodenormal. */ - /* This is non-80486 behaviour because the number - loses its 'denormal' identity. */ - addexponent(x, 1); - } - else - { - /* Is a denormal. */ - addexponent(x, 1); - FPU_normalize_nuo(x); + int sign = getsign(a); + + *(long long *)&(x->sigl) = *(const long long *)&(a->sigl); + + /* Set up the exponent as a 16 bit quantity. */ + setexponent16(x, exponent(a)); + + if (exponent16(x) == EXP_UNDER) { + /* The number is a de-normal or pseudodenormal. */ + /* We only deal with the significand and exponent. */ + + if (x->sigh & 0x80000000) { + /* Is a pseudodenormal. */ + /* This is non-80486 behaviour because the number + loses its 'denormal' identity. */ + addexponent(x, 1); + } else { + /* Is a denormal. */ + addexponent(x, 1); + FPU_normalize_nuo(x); + } } - } - if ( !(x->sigh & 0x80000000) ) - { - EXCEPTION(EX_INTERNAL | 0x180); - } + if (!(x->sigh & 0x80000000)) { + EXCEPTION(EX_INTERNAL | 0x180); + } - return sign; + return sign; } - |