performance_new_fpu.txt

nios中自定义指令集实现三角函数的软件部分。

nios2-terminal: connected to hardware target using JTAG UART on cable
nios2-terminal: "USB-Blaster [USB-0]", device 1, instance 0
nios2-terminal: (Use the IDE stop button or Ctrl-C to terminate)

Time tests starting...

 Double Precision Addition Test...


 Double Precision Subtraction Test...


 Double Precision Multiplication Test...


 Double Precision Division Test...


 Single Precision Addition Test...


 Single Precision Subtraction Test...


 Single Precision Multiplication Test...


 Single Precision Division Test...


 Double Precision Compare Test...


 Double to Float Test...


 Float to Double Test...


 int to Double Test...


 Double to int Test...


 uint to Double Test...


 Double to uint Test...


 Non Arithmetic Placebo Test...

Finished...

dp_placebo_time = 35338
dp_sw_add_time = 642353 -- 607015
dp_hw_add_time = 71154 -- 35816 -- 16.948
dp_sw_sub_time = 713491 -- 678153
dp_hw_sub_time = 71161 -- 35823 -- 18.931
dp_sw_mul_time = 877122 -- 841784
dp_hw_mul_time = 70143 -- 34805 -- 24.186
dp_sw_div_time = 1896134 -- 1860796
dp_hw_div_time = 121157 -- 85819 -- 21.683

sp_placebo_time = 26151
sp_sw_add_time = 261618 -- 235467
sp_hw_add_time = 58165 -- 32014 -- 7.355
sp_sw_sub_time = 265936 -- 239785
sp_hw_sub_time = 58145 -- 31994 -- 7.495
sp_sw_mul_time = 325704 -- 299553
sp_hw_mul_time = 55151 -- 29000 -- 10.329
sp_sw_div_time = 543071 -- 516920
sp_hw_div_time = 81146 -- 54995 -- 9.399

non_arith_placebo_time = 10061
dp_sw_compare_time = 246411
dp_hw_compare_time = 31078 -- 11.246
dpfp_sw_float_to_double_time = 216458
dpfp_hw_float_to_double_time = 20079 -- 20.603
dpfp_sw_double_to_float_time = 155355
dpfp_hw_double_to_float_time = 17055 -- 20.774
dpfp_sw_int_to_double_time = 644437
dpfp_hw_int_to_double_time = 24059 -- 45.319
dpfp_sw_uint_to_double_time = 1388682
dpfp_hw_uint_to_double_time = 24063 -- 98.459
dpfp_sw_double_to_uint_time = 950863
dpfp_hw_double_to_uint_time = 47059 -- 25.428
dpfp_sw_double_to_int_time = 128306
dpfp_hw_double_to_int_time = 17079 -- 16.849