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Taojunshenopbld17colin-homeopbld16KisaragiEffective
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9/14/2022 AM Publish (#4517)
* fix: delete unnecessary asterisk followup fix of MicrosoftDocs#4136 * optimize prime test * Update floating-point-support.md Explain what "ulp" stands for Co-authored-by: opbld17 <opbld17@microsoft.com> Co-authored-by: Colin Robertson <3836425+corob-msft@users.noreply.github.com> Co-authored-by: opbld16 <opbld16@microsoft.com> Co-authored-by: Kisaragi <48310258+KisaragiEffective@users.noreply.github.com> Co-authored-by: Courtney Wales <62625502+Court72@users.noreply.github.com> Co-authored-by: opbld15 <opbld15@microsoft.com> Co-authored-by: TylerMSFT <Tyler.Whitney@microsoft.com> Co-authored-by: Bryan Gold <101299717+19BMG00@users.noreply.github.com> Co-authored-by: Edward Breeveld <42862235+EddieBreeveld@users.noreply.github.com> Co-authored-by: Jeff Borsecnik <36546697+jborsecnik@users.noreply.github.com>
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‎docs/c-runtime-library/floating-point-support.md‎

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# Math and floating-point support
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The Universal C Runtime library (UCRT) provides many integral and floating-point math library functions, including all of those required by ISO C99. The floating-point functions are implemented to balance performance with correctness. Because producing the correctly rounded result may be prohibitively expensive, these functions are designed to efficiently produce a close approximation to the correctly rounded result. In most cases, the result produced is within +/-1 ulp of the correctly rounded result, though there may be cases where there is greater inaccuracy.
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The Universal C Runtime library (UCRT) provides many integral and floating-point math library functions, including all of those required by ISO C99. The floating-point functions are implemented to balance performance with correctness. Because producing the correctly rounded result may be prohibitively expensive, these functions are designed to efficiently produce a close approximation to the correctly rounded result. In most cases, the result produced is within +/-1 ulp (unit of least precision) of the correctly rounded result, though there may be cases where there is greater inaccuracy.
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For ISO C Standard 11 (C11) and later, the `<tgmath.h>` header, in addition to including `<math.h>` and `<complex.h>`, provides macros that invoke a corresponding math function based on the types of the parameters. See [Type-generic math](tgmath.md) for details.
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‎docs/c-runtime-library/reference/fopen-wfopen.md‎

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| ccs flag | No BOM (or new file) | BOM: UTF-8 | BOM: UTF-16 |
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|--|--|--|--|
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| **`UNICODE`** | **`UTF-16LE`** | **`*UTF-8`** | **`UTF-16LE`** |
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| **`UNICODE`** | **`UTF-16LE`** | **`UTF-8`** | **`UTF-16LE`** |
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| **`UTF-8`** | **`UTF-8`** | **`UTF-8`** | **`UTF-16LE`** |
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| **`UTF-16LE`** | **`UTF-16LE`** | **`UTF-8`** | **`UTF-16LE`** |
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