Weiliang Yang wilem
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| # calculator by call (bash)shell command. | |
| calc=$(shell echo $$\(\($(1)\)\)) | |
| foo=$(call calc,3*4) | |
| SZ_1K:=$(call calc,32*32) | |
| SZ_4K:=$(call calc,$(SZ_1K)*4) | |
| SZ_4M:=$(call calc,$(SZ_4K)*$(SZ_1K)) | |
| SZ_4G:=$(call calc,$(SZ_4M)*$(SZ_1K)) |
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| import math | |
| def complex_dft(xr, xi, n): | |
| pi = 3.141592653589793 | |
| rex = [0] * n | |
| imx = [0] * n | |
| for k in range(0, n): # exclude n | |
| rex[k] = 0 | |
| imx[k] = 0 | |
| for k in range(0, n): # for each value in freq domain |
wilem
/ epool_server_demo.c
Created
March 14, 2014 02:02
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| void epoll_server() | |
| { | |
| for(; ;) { | |
| nfds = epoll_wait(epfd, events, 20/*maxevents*/, 500/*timeout*/); | |
| for(i = 0; i < nfds; ++i) { | |
| // 如果是主socket的事件，则表示有新的连接 | |
| if (events[i].data.fd == listenfd) { | |
| connfd = accept(listenfd, | |
| (sockaddr *) &clientaddr, |