PROLOG<\/a> This manual page is part of the POSIX Programmer\u2019s Manual. The Linux implementation of this interface may differ (consult the corresponding Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.<\/p>\n llround, llroundf, llroundl \u2014 round to nearest integer value<\/p>\n #include long long llround(double x<\/i>); The functionality described on this reference page is aligned with the ISO\u00a0C standard. Any conflict between the requirements described here and the ISO\u00a0C standard is unintentional. This volume of POSIX.1-2017 defers to the ISO\u00a0C standard.<\/p>\n These functions shall round their argument to the nearest integer value, rounding halfway cases away from zero, regardless of the current rounding direction.<\/p>\n An application wishing to check for error situations should set errno<\/i> to zero and call feclearexcept<\/i>(FE_ALL_EXCEPT) before calling these functions. On return, if errno<\/i> is non-zero or fetestexcept<\/i>(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW) is non-zero, an error has occurred.<\/p>\n Upon successful completion, these functions shall return the rounded integer value.<\/p>\n If x<\/i> is NaN, a domain error shall occur, and an unspecified value is returned.<\/p>\n If x<\/i> is +Inf, a domain error shall occur and an unspecified value is returned.<\/p>\n If x<\/i> is \u2212Inf, a domain error shall occur and an unspecified value is returned.<\/p>\n If the correct value is positive and too large to represent as a long long<\/b>, an unspecified value shall be returned. On systems that support the IEC 60559 Floating-Point option, a domain error shall occur; otherwise, a domain error may occur.<\/p>\n If the correct value is negative and too large to represent as a long long<\/b>, an unspecified value shall be returned. On systems that support the IEC 60559 Floating-Point option, a domain error shall occur; otherwise, a domain error may occur.<\/p>\n These functions shall fail if: The x<\/i> argument is NaN or \u00b1Inf, or the correct value is not representable as an integer.<\/p>\n If the integer expression (math_errhandling<\/i> & MATH_ERRNO) is non-zero, then errno<\/i> shall be set to [EDOM]<\/b>. If the integer expression (math_errhandling<\/i> & MATH_ERREXCEPT) is non-zero, then the invalid floating-point exception shall be raised.<\/p>\n These functions may fail if: The correct value is not representable as an integer.<\/p>\n If the integer expression (math_errhandling<\/i> & MATH_ERRNO) is non-zero, then errno<\/i> shall be set to [EDOM]<\/b>. If the integer expression (math_errhandling<\/i> & MATH_ERREXCEPT) is non-zero, then the invalid floating-point exception shall be raised.<\/p>\n The following sections are informative.<\/i><\/p>\n None.<\/p>\n On error, the expressions (math_errhandling<\/i> & MATH_ERRNO) and (math_errhandling<\/i> & MATH_ERREXCEPT) are independent of each other, but at least one of them must be non-zero.<\/p>\n These functions differ from the llrint<\/i>() functions in that the default rounding direction for the llround<\/i>() functions round halfway cases away from zero and need not raise the inexact floating-point exception for non-integer arguments that round to within the range of the return type.<\/p>\n None.<\/p>\n feclearexcept<\/i>(), fetestexcept<\/i>(), lround<\/i>()<\/p>\n
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long long llroundf(float x<\/i>);
long long llroundl(long double x<\/i>);<\/p>\nDESCRIPTION <\/a> <\/h2>\n
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Domain\u00a0Error<\/p>\n
Domain\u00a0Error<\/p>\nEXAMPLES <\/a> <\/h2>\n
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