diff options
| -rw-r--r-- | fpu/softfloat.c | 2 | ||||
| -rw-r--r-- | tests/tcg/i386/test-i386-pseudo-denormal.c | 10 |
2 files changed, 11 insertions, 1 deletions
diff --git a/fpu/softfloat.c b/fpu/softfloat.c index c57f72e3a6..a362bf89ca 100644 --- a/fpu/softfloat.c +++ b/fpu/softfloat.c @@ -5741,7 +5741,7 @@ floatx80 floatx80_round_to_int(floatx80 a, float_status *status) } if ( aExp < 0x3FFF ) { if ( ( aExp == 0 ) - && ( (uint64_t) ( extractFloatx80Frac( a )<<1 ) == 0 ) ) { + && ( (uint64_t) ( extractFloatx80Frac( a ) ) == 0 ) ) { return a; } status->float_exception_flags |= float_flag_inexact; diff --git a/tests/tcg/i386/test-i386-pseudo-denormal.c b/tests/tcg/i386/test-i386-pseudo-denormal.c index acf2b9cf03..00d510cf4a 100644 --- a/tests/tcg/i386/test-i386-pseudo-denormal.c +++ b/tests/tcg/i386/test-i386-pseudo-denormal.c @@ -14,6 +14,7 @@ volatile long double ld_res; int main(void) { + short cw; int ret = 0; ld_res = ld_pseudo_m16382.ld + ld_pseudo_m16382.ld; if (ld_res != 0x1p-16381L) { @@ -24,5 +25,14 @@ int main(void) printf("FAIL: pseudo-denormal compare\n"); ret = 1; } + /* Set round-upward. */ + __asm__ volatile ("fnstcw %0" : "=m" (cw)); + cw = (cw & ~0xc00) | 0x800; + __asm__ volatile ("fldcw %0" : : "m" (cw)); + __asm__ ("frndint" : "=t" (ld_res) : "0" (ld_pseudo_m16382.ld)); + if (ld_res != 1.0L) { + printf("FAIL: pseudo-denormal round-to-integer\n"); + ret = 1; + } return ret; } |