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    How can I get the size of the display in centimeters or inches? This code does not always works correctly: ... have a constant physical size. See Question&Answers more detail:os...
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    With GCC 5.3 the following code compield with -O3 -fma float mul_add(float a, float b, float c) { return a*b ... ICC) but Clang and MSVC do not. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Where do malloc() and free() store the allocated addresses and their sizes (Linux GCC)? I've read that some ... free() know about. ciao, Elmar See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Is there a way to tell gcc to throw a SIGFPE or something similar in response to a calculation that results in ... which doesn't seem to help. See Question&Answers more detail:os...
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    By default, printf() seems to align strings to the right. printf("%10s %20s %20s ", "col1", "col2", "col3" ... text width for that column is 8? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I should count the number of set bits of a __m128i register. In particular, I should write two functions ... partially, the above operations? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    On a linux system, does the child process view the existing threads the same way as the parent process ? int ... in child process as well ? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Ok, so I understand that strtok modifies its input argument, but in this case, it's collapsing down the input string ... is now just "this" } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    pthread question: it appears that a condition variable only works if pthread_cond_wait is called before ... before pthread_cond_wait b785bb70 See Question&Answers more detail:os...
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    I am using CreateProcess to create a cmd.exe process that is passed a parameter that it executes and quits, ... way to get enviroment variables? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I'm trying to write a matrix-vector multiplication program using MPI. I'm trying to send columns of the matrix ... in MPI. Thanks in advance. See Question&Answers more detail:os...
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    How can I convert an integer to its String representation in Roman numerals in C ? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    The standard method to send data on a stream socket has always been to call send with a chunk of data to ... with select should be used instead. See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    >>> hash("x01") 128000384 >>> hash("x02") 256000771 >>> hash("x03") 384001154 >>> hash("x04") 512001541 ... and want to learn something on it. See Question&Answers more detail:os...
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    I'm customising a code I found over the internet (it's the Adafruit Tweet Receipt). I cannot understand many parts of ... I guess it's in C). See Question&Answers more detail:os...
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    I know that WIN32 denotes win32 compilation but what is _WIN32 used for? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    If I allocate a 2D array like this int a[N][N]; it will allocate a contiguous block of memory. But if I try ... , is there another way to do it? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I just come across the statement in embedded c (dsPIC33) sample1 = sample2 = 0; Would this mean sample1 = 0; ... Is this good or bad coding? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Most of the objections I see to using global variables make sense since they refer to issues of multiple threads ... allocated at compile time.) See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I know this is programming questions but I'm just frustrated trying to figure out what I'm doing wrong.. I'm using ... (curl); } return 0; } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    Since yesterday, I've been facing a compiling error for my C project. The project itself consists on creating a ... anyone helps ? Thanks ! See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I want to partition matrix into blocks (not stripes) and then distribute this blocks using MPI_Scatter. I came up ... (); return 0; } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    From here : Is file append atomic in UNIX Consider a case where multiple processes open the same file and append ... (); return status; } See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have a count register, which is made up of two 32-bit unsigned integers, one for the higher 32 bits ... it display 4294967296 instead of 10? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I have static libraries A, B and C organized into Xcode projects. A and B depend on C. When I ... projects without experiencing this error? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am trying to write something like this: #define COV_ON(x) #ifdef COVERAGE_TOOL _Pragma (COVERAGE #x) #endif Is ... So is there any solution? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    I am looking for an algorithm that I can use to evaluate mathematical expressions. I've seen a few questions on ... prefer a C library Thank you See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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    People use void main() /*empty parens ()*/ I have been taught to write void main(void) Any ideas what the difference is? See Question&Answers more detail:os...
asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)
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