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exit(3) -- cause normal program termination
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The exit() function causes normal program termination and the value of status is returned to the parent. All functions registered with atexit() and on_exit() are called in the reverse order of their r... |
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exp(3) -- exponential, logarithmic and power functions
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The exp() function returns the value of e (the base of natural logarithms) raised to the power of x. The log() function returns the natural logarithm of x. The log10() function returns the base-10 log... |
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expm1(3) -- exponential minus 1, logarithm of 1 plus argument
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expm1(x) returns a value equivalent to `exp (x) - 1'. It is computed in a way that is accurate even if the value of x is near zero--a case where `exp (x) - 1' would be inaccurate due to subtraction ... |
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fabs(3) -- absolute value of floating-point number
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The fabs functions return the absolute value of the floating-point number x. |
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fclose(3) -- close a stream
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The fclose function dissociates the named stream from its underlying file or set of functions. If the stream was being used for output, any buffered data is written first, using fflush(3). |
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fcloseall(3) -- close all open streams
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The fcloseall function dissociates all open streams from its underlying file or set of functions. Any buffered output data is written first, using fflush(3). Note that the standard streams (stdin, std... |
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fenv(3) -- C99 floating point rounding and exception handling
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These eleven functions were defined in C99, and describe the handling of floating point rounding and exceptions (overflow, zero-divide etc.). Exceptions [Toc] [Back] The DivideByZero exception o... |
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ferror(3) -- check and reset stream status
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The function clearerr clears the end-of-file and error indicators for the stream pointed to by stream. The function feof tests the end-of-file indicator for the stream pointed to by stream, returning ... |
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fflush(3) -- flush a stream
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The function fflush forces a write of all user-space buffered data for the given output or update stream via the stream's underlying write function. The open status of the stream is unaffected. If th... |
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ffs(3) -- find first bit set in a word
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The ffs() function returns the position of the first bit set in the word i. The least significant bit is position 1 and the most significant position 32. |
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fgetgrent(3) -- get group file entry
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The fgetgrent() function returns a pointer to a structure containing the group information from the file stream. The first time it is called it returns the first entry; thereafter, it returns successi... |
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fgetpwent(3) -- get password file entry
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The fgetpwent() function returns a pointer to a structure containing the broken out fields of a line in the file stream. The first time it is called it returns the first entry; thereafter, it returns ... |
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fgetwc(3) -- read a wide character from a FILE stream
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The fgetwc function is the wide-character equivalent of the fgetc function. It reads a wide character from stream and returns it. If the end of stream is reached, or if ferror(stream) becomes true, it... |
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fgetws(3) -- read a wide character string from a FILE stream
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The fgetws function is the wide-character equivalent of the fgets function. It reads a string of at most n-1 wide characters into the widecharacter array pointed to by ws, and adds a terminating L'\... |
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floor(3) -- largest integral value not greater than argument
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These functions round x down to the nearest integer. |
