| ISO Standard: | “The accuracy of the floating-point
operations and of the library functions in <math.h> and <complex.h> that
return floating-point results (C90 and C99 5.2.4.2.2).” |
| Implementation: | The accuracy is unknown. |
| ISO Standard: | “The accuracy of the conversions between
floating-point internal representations and string representations performed by
the library functions in <stdio.h>, <stdlib.h>, and <wchar.h> (C90 and
C99 5.2.4.2.2).” |
| Implementation: | The accuracy is unknown. |
| ISO Standard: | “The rounding behaviors characterized by non-standard values of FLT_ROUNDS (C90 and C99 5.2.4.2.2).” |
| Implementation: | No such values are used. |
| ISO Standard: | “The evaluation methods characterized by non-standard negative values of FLT_EVAL_METHOD (C90 and C99 5.2.4.2.2).” |
| Implementation: | No such values are used. |
| ISO Standard: | “The direction of rounding when an integer is converted to a floating-point number that cannot exactly represent the original value (C90 6.2.1.3, C99 6.3.1.4).” |
| Implementation: | C99 Annex F is followed. |
| ISO Standard: | “The direction of rounding when a floating-point number is converted to a narrower floating-point number (C90 6.2.1.4, 6.3.1.5).” |
| Implementation: | C99 Annex F is followed. |
| ISO Standard: | “How the nearest representable value or the larger or smaller representable value immediately adjacent to the nearest representable value is chosen for certain floating constants (C90 6.1.3.1, C99 6.4.4.2).” |
| Implementation: | C99 Annex F is followed. |
| ISO Standard: | “Whether and how floating expressions are contracted when not disallowed by the FP_CONTRACT pragma (C99 6.5).” |
| Implementation: | The pragma is not implemented. |
| ISO Standard: | “The default state for the FENV_ACCESS pragma (C99 7.6.1).” |
| Implementation: | This pragma is not implemented. |
| ISO Standard: | “Additional floating-point exceptions, rounding modes, environments, and classifications, and their macro names (C99 7.6, 7.12).” |
| Implementation: | None supported. |
| ISO Standard: | “The default state for the FP_CONTRACT pragma (C99 7.12.2).” |
| Implementation: | This pragma is not implemented. |
| ISO Standard: | “Whether the “inexact” floating-point exception can be raised when the rounded result actually does equal the mathematical result in an IEC 60559 conformant implementation (C99 F.9).” |
| Implementation: | Unknown. |
| ISO Standard: | “Whether the “underflow” (and “inexact”) floating-point exception can be raised when a result is tiny but not inexact in an IEC 60559 conformant implementation (C99 F.9).” |
| Implementation: | Unknown. |
