Freescale Semiconductor MC68881 - Arithmetic Calculation Times - - Monadic Operations

8
Table 8-15. Arithmetic Calculation Times -- Monadic Operations
Source
Operation
FABS
FACOS
Normalized
+
4+
594+
FAStN 550 +
FATAN 372 +
Zero
4+
121
202
Infinity
+
20
NAN
+
NAN2
NAN2
6 20 NAN2
6 NAN2
121 141
202 222
FATANH 662 + 6 20 NAN2
FCOS 350 + 3 8 20 NAN2
FCOSH 576 + 8 8 NAN2 .
FETOX 466 + 8 6 NAN2
F ETO X M 1
514+
FGETEXP exponent = 0:16
exponent>O:20
exponent<0:22
6 8
20
20
60
FGETMAN
FINT, FINTRZ
FLOGN
fraction = 0:8
fraction =~ 0:30
result = 0:28
NAN2
NAN2
NAN2
NAN2
494+ lOP 22 6 20 NAN2
FLOGNP1 540+ 4 6 6 20 NAN2
FLOG10 550+ lOP 22 6 20 NAN2
FLOG2 550 + lOP 22 6 20 NAN2
FMOVE to FPn 2+ 6 6 NAN2
FMOVECR 181 -- -- --
262
FNEG 4+ 4+ 8 NAN2 • t
FSIN 360 + 3 6 20 NAN2
420+ 3
20 FSINCOS
FSINH
26
656 +
NAN6
NAN2
FSQRT 76 + lOP 6 6 20 NAN2
FTAN 442 + 3 6 20 NAN2
FTANH 630+ 6 8 NAN2
FTENTOX 536 +
536+
FTST
FTWOTOX
NAN2
NAN5
NAN2
NOTES:
1. If the extended precision rounding mode is used.
2. If the single or double precision rounding mode is used.
&This assumes that the source operand is in the range (- 9... + 9), If the source operand is outside
of that range, the appropriate REM calculation time required to perform the argument reduction
must be added to this value.
4. If the source operand is less than or equal to - 1, use the lOP time.
FREESCALE
8-34
MC68881/MC68882 USER'S MANUAL