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floatx.asm: add tests for "rounds up to smallest denorm"

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Add tests for the case where we round upwards to reach the smallest
possible denorm, i.e. "saved from underflow by rounding."
This commit is contained in:
H. Peter Anvin 2007-10-30 01:17:57 -07:00
parent 23f1644ba9
commit a30acb52cd
1 changed files with 5 additions and 0 deletions
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5
test/floatx.asm
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@ -27,6 +27,7 @@
dw 0x0.0000123456789p+10
dw 0x0.0000123456789p-10
dw 0x1.0p-25 ; Underflow
dw 0x1.01p-25 ; Rounds to denorm
dw 0x1.0p-24 ; Smallest denorm
dw 0x1.ffffffffffffffffffffffffffffp-16 ; Rounds to denorm
dw 0x1.0p-15 ; Denorm
@ -62,6 +63,7 @@
dd 0x123456789.0p+0
dd 0x123456789.0p+64
dd 0x1.0p-150 ; Underflow
dd 0x1.01p-150 ; Rounds to denorm
dd 0x1.0p-149 ; Smallest denorm
dd 0x1.ffffffffffffffffffffffffffffp-128 ; Rounds to denorm
dd 0x1.0p-127 ; Denorm
@ -97,6 +99,7 @@
dq 0x123456789.0p+0
dq 0x123456789.0p+300
dq 0x1.0p-1075 ; Underflow
dq 0x1.01p-1075 ; Rounds to denorm
dq 0x1.0p-1074 ; Smallest denorm
dq 0x1.ffffffffffffffffffffffffffffp-1024 ; Rounds to denorm
dq 0x1.0p-1023 ; Denorm
@ -132,6 +135,7 @@
dt 0x123456789.0p+0
dt 0x123456789.0p+1024
dt 0x1.0p-16446 ; Underflow
dt 0x1.01p-16446 ; Rounds to denorm
dt 0x1.0p-16445 ; Smallest denorm
dt 0x1.ffffffffffffffffffffffffffffp-16384 ; Rounds to denorm
dt 0x1.0p-16383 ; Denorm
@ -167,6 +171,7 @@
do 0x123456789.0p+0
do 0x123456789.0p+1024
do 0x1.0p-16495 ; Underflow
do 0x1.01p-16495 ; Rounds to denorm
do 0x1.0p-16494 ; Smallest denorm
do 0x1.ffffffffffffffffffffffffffffffffp-16384 ; Rounds to denorm
do 0x1.0p-16383 ; Denorm