(Math with Bittians)
by Dennis Crombie
OSI Certified Open Source Software

this was the test:
(using bMathecx.inc)

invoke GetLocalTime, ADDR time1

xor esi, esi
fldz
fst timp
_lp1:
fcos ; compared against bFn's
fstp trash
fld timp
fadd _add
fst timp
inc esi
.if esi < 0ffffffh
jmp _lp1
.endif

invoke GetLocalTime, ADDR time2

xor esi, esi
fldz
fst timp
_lp2:
bCos ; then other bFn's (see bellow)
fstp trash
fld timp
fadd _add
fst timp
inc esi
.if esi < 0ffffffh
jmp _lp2
.endif

invoke GetLocalTime, ADDR time3

=======================================
results:

!!! these results don't show the difference
between the FPU and bMath, it shows the
difference between routine times when 1
FPU instruction is replaced with a bFn !!!

22.34
-------> 3.40
25.74--------> 2.29729797297 times faster
-------> 1.48
27.22

(FP Input for bFn in Bittians, FP Input for fpuFn
in Radians)

=======================================

Snappy Angle Test

invoke GetLocalTime, ADDR time1

xor esi, esi
fldz
fst timp
_lp1:
fcos
fstp trash
fld timp
fadd _add
fst timp
inc esi
.if esi < 0ffffffh
jmp _lp1
.endif

invoke GetLocalTime, ADDR time2

xor esi, esi
fldz
fst timp
_lp2:
bSnapC
fstp trash
fld timp
fadd _add
fst timp
inc esi
.if esi < 0ffffffh
jmp _lp2
.endif

invoke GetLocalTime, ADDR time3

56.89
-------> 3.41
00.30 -------> 2.8181818181 times faster
-------> 1.21
01.51

(FP Input for bFn in Bittians, FP Input for fpuFn
in Radians)

=======================================

Double Snappy Angle Test

invoke GetLocalTime, ADDR time1

xor esi, esi
fldz
fst timp
_lp1:
fcos
fstp trash
fld timp
fcos
fstp trash
fld timp
fadd _add
fst timp
inc esi
.if esi < 0ffffffh
jmp _lp1
.endif

invoke GetLocalTime, ADDR time2

xor esi, esi
fldz
fst timp
_lp2:
bSnapC
fstp trash
fld timp
bSnapC
fstp trash
fld timp
fadd _add
fst timp
inc esi
.if esi < 0ffffffh
jmp _lp2
.endif

invoke GetLocalTime, ADDR time3

43.77
------> 6.48
50.25 ------> 3.115384615 times faster
------> 2.08
52.33