Floating-point extensions part 1: binary floating-point arithmetic
From cppreference.com
< c | experimental
Floating-point extensions for C - Part 1: Binary floating-point arithmetic, ISO/IEC TS 18661-1:2014, defines the following new components for the C standard library, as recommended by ISO/IEC/IEEE 60559:2011 (the current revision of IEEE-754)
| __STDC_IEC_60559_BFP__ |
integer constant of type long and value 201ymmL, replaces __STDC_IEC_559__ (macro constant) |
| __STDC_IEC_60559_COMPLEX__ |
integer constant of type long and value 201ymmL, replaces __STDC_IEC_559_COMPLEX__ (macro constant) |
| Defined in header
<limits.h> | |
| CHAR_WIDTH SCHAR_WIDTH UCHAR_WIDTHSHRT_WIDTH USHRT_WIDTHINT_WIDTH UINT_WIDTHLONG_WIDTH ULONG_WIDTHLLONG_WIDTH ULLONG_WIDTH (FP Ext 1 TS) |
width, in bits, of the corresponding type (macro constant) |
| Defined in header
<float.h> | |
| (FP Ext 1 TS) |
conversions between all supported binary floating-point types and character sequences with at most CR_DECIMAL_DIG significant decimal digits are correctly rounded (this is at least DECIMAL_DIG + 3) (macro constant) |
| Defined in header
<fenv.h> | |
| femode_t (FP Ext 1 TS) |
collection of dynamic floating-point control modes supported by the implementation, including the dynamic rounding direction mode (typedef) |
| FE_DFL_MODE (FP Ext 1 TS) |
pointer to the default femode_t (macro constant) |
| FE_SNANS_ALWAYS_SIGNAL (FP Ext 1 TS) |
defined (as integer constant 1) if sNaN arguments cause the functions that suppress qNaNs, like hypot or fmax, to raise FE_INVALID and return a qNaN (macro constant) |
| (FP Ext 1 TS) |
sets the specified floating-point exception flags without causing any side-effects that raising them would (function) |
| (FP Ext 1 TS) |
tests if given flags are in a saved representation of the floating-point exception flags (function) |
| (FP Ext 1 TS) |
gets and sets all the implementation’s dynamic floating-point control modes collectively (function) |
| Defined in header
<stdint.h> | |
| INTn_WIDTH UINTn_WIDTHINT_LEASTn_WIDTH UINT_LEASTn_WIDTHINT_FASTn_WIDTH UINT_FASTn_WIDTHINTPTR_WIDTH UINTPTR_WIDTHINTMAX_WIDTH UINTMAX_WIDTHPTRDIFF_WIDTHSIG_ATOMIC_WIDTHSIZE_WIDTHWCHAR_WIDTH WINT_WIDTH (FP Ext 1 TS) |
width, in bits, of the corresponding type (macro constant) |
| Defined in header
<stdlib.h> | |
| (FP Ext 1 TS) |
convert a single foating-point number to string using the specified snprintf format (function) |
| Defined in header
<math.h> | |
| FP_INT_UPWARDFP_INT_DOWNWARDFP_INT_TOWARDZERO
FP_INT_TONEARESTFROMZEROFP_INT_TONEAREST (FP Ext 1 TS) |
rounding direction for the functions ceil, floor, trunc, round, and roundeven, suitable for use with fromfp family of functions (macro constant) |
| FP_LLOGB0 (FP Ext 1 TS) |
value returned by llogb if the argument is zero (macro constant) |
| FP_LLOGBNAN (FP Ext 1 TS) |
value returned by llogb if the argument is NaN (macro constant) |
| (FP Ext 1 TS) |
represents a signalling NaN for float, double, long double respectively (macro constant) |
| FP_FAST_FADD FP_FAST_FADDL FP_FAST_DADDLFP_FAST_FSUB FP_FAST_FSUBL FP_FAST_DSUBLFP_FAST_FMUL FP_FAST_FMULL FP_FAST_DMULLFP_FAST_FDIV FP_FAST_FDIVL FP_FAST_DDIVLFP_FAST_FFMA FP_FAST_FFMAL FP_FAST_DFMALFP_FAST_FSQRT FP_FAST_FSQRTL FP_FAST_DSQRTL (FP Ext 1 TS) |
if defined, indicates that the corresponding function executes faster than the equivalent function in a larger type followed by a cast to target type (macro constant) |
| iseqsig (FP Ext 1 TS) |
(function macro) |
| iscanonical (FP Ext 1 TS) |
tests if the floating-point value is canonical (function macro) |
| issignaling (FP Ext 1 TS) |
tests if the floating-point value is a signalling NaN (function macro) |
| issubnormal (FP Ext 1 TS) |
tests if the floating-point value is subnormal (function macro) |
| iszero (FP Ext 1 TS) |
tests if the floating-point value is a zero (positive, negative, unsigned) (function macro) |
| (FP Ext 1 TS) |
round to signed integer using the specified rounding direction (function) |
| (FP Ext 1 TS) |
round to unsigned integer using the specified rounding direction (function) |
| (FP Ext 1 TS) |
round to signed integer using the specified rounding direction, reporting inexactness (function) |
| (FP Ext 1 TS) |
round to unsigned integer using the specified rounding direction, reporting inexactness (function) |
| (FP Ext 1 TS) |
rounds to nearest, halfway cases to even (function) |
| | |