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| author | H. Peter Anvin <hpa@zytor.com> | 2007-10-29 20:20:12 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2007-10-29 20:20:12 -0700 |
| commit | 2ce0274303000c95f5f503f1fb0db86fd108b06e (patch) | |
| tree | ac275b173a622172cac59dec5c1c374463cb9d2b /test | |
| parent | 052c0bd4843e9222711bec40093ce294d0e32540 (diff) | |
| download | nasm-2ce0274303000c95f5f503f1fb0db86fd108b06e.tar.gz | |
Use a 32-bit floating-point limb size; support 8-bit float
Use a 32-bit limb size ("like a digit, but bigger") for floating-point
conversion. This cuts the number of multiplications per constant by a
factor of four.
This means supporting fractional-limb-sized numbers, so while we're at
it, add support for 8-bit floating point numbers (apparently used in
graphics and in audio compression applications.)
Diffstat (limited to 'test')
| -rw-r--r-- | test/float.asm | 37 | ||||
| -rw-r--r-- | test/floatexp.asm | 26 |
2 files changed, 62 insertions, 1 deletions
diff --git a/test/float.asm b/test/float.asm index 759b61c3..df2d96c0 100644 --- a/test/float.asm +++ b/test/float.asm @@ -2,6 +2,36 @@ ; Test of floating-point formats ; +; 8-bit + db 1.0 + db +1.0 + db -1.0 + db 1.5 + db +1.5 + db -1.5 + db 0.0 + db +0.0 + db -0.0 + db 1.83203125 + db +1.83203125 + db -1.83203125 + db 1.83203125e1 + db +1.83203125e1 + db -1.83203125e1 + db 1.83203125e-1 + db +1.83203125e-1 + db -1.83203125e-1 + db 1.13203125e-2 ; Denormal! + db +1.13203125e-2 ; Denormal! + db -1.13203125e-2 ; Denormal! + db __Infinity__ + db +__Infinity__ + db -__Infinity__ + db __NaN__ + db __QNaN__ + db __SNaN__ + db 3.1415926535_8979323846_2643383279_5028841971_6939937510_5 + ; 16-bit dw 1.0 dw +1.0 @@ -30,6 +60,7 @@ dw __NaN__ dw __QNaN__ dw __SNaN__ + dw 3.1415926535_8979323846_2643383279_5028841971_6939937510_5 ; 32-bit dd 1.0 @@ -59,6 +90,7 @@ dd __NaN__ dd __QNaN__ dd __SNaN__ + dd 3.1415926535_8979323846_2643383279_5028841971_6939937510_5 ; 64-bit dq 1.0 @@ -88,7 +120,8 @@ dq __NaN__ dq __QNaN__ dq __SNaN__ - + dq 3.1415926535_8979323846_2643383279_5028841971_6939937510_5 + ; 80-bit dt 1.0 dt +1.0 @@ -117,6 +150,7 @@ dt __NaN__ dt __QNaN__ dt __SNaN__ + dt 3.1415926535_8979323846_2643383279_5028841971_6939937510_5 ; 128-bit do 1.0 @@ -146,3 +180,4 @@ do __NaN__ do __QNaN__ do __SNaN__ + do 3.1415926535_8979323846_2643383279_5028841971_6939937510_5 diff --git a/test/floatexp.asm b/test/floatexp.asm index 7e6a01c3..b3d14f76 100644 --- a/test/floatexp.asm +++ b/test/floatexp.asm @@ -3,6 +3,32 @@ ; Test of floating-point formats ; +; 8-bit + mov al,__float8__(1.0) + mov al,__float8__(+1.0) + mov al,__float8__(-1.0) + mov al,__float8__(0.0) + mov al,__float8__(+0.0) + mov al,__float8__(-0.0) + mov al,__float8__(1.83203125) + mov al,__float8__(+1.83203125) + mov al,__float8__(-1.83203125) + mov al,__float8__(1.83203125e1) + mov al,__float8__(+1.83203125e1) + mov al,__float8__(-1.83203125e1) + mov al,__float8__(1.83203125e-1) + mov al,__float8__(+1.83203125e-1) + mov al,__float8__(-1.83203125e-1) + mov al,__float8__(1.13203125e-2) ; Denormal! + mov al,__float8__(+1.13203125e-2) ; Denormal! + mov al,__float8__(-1.13203125e-2) ; Denormal! + mov al,__float8__(__Infinity__) + mov al,__float8__(+__Infinity__) + mov al,__float8__(-__Infinity__) + mov al,__float8__(__NaN__) + mov al,__float8__(__QNaN__) + mov al,__float8__(__SNaN__) + ; 16-bit mov ax,__float16__(1.0) mov ax,__float16__(+1.0) |