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Edit and shorten float128 NEWS item.

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Joseph Myers 2017-07-05 17:43:58 +00:00
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105
NEWS
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@ -56,101 +56,22 @@ Major new features:
Exxxx constants, as preprocessor macros expanding to integer literals.
* On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
128-bit floating point as defined by IEEE 60559:2011 and ISO/IEC TS
18661-3:2015. Support for more architectures will be added in future
releases. Contributed by Paul E. Murphy, Gabriel F. T. Gomes, and Tulio
Magno Quites Machado Filho.
128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
To compile programs that use this feature, the compiler must support
128-bit floating point with the type name _Float128 (as defined by
TS 18661-3) or __float128 (the nonstandard name used by GCC prior to
version 7).
128-bit floating point with the type name _Float128 (as defined by TS
18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
must be defined to make the new interfaces visible.
New <stdlib.h> functions from ISO/IEC TS 18661-3:
- String Conversion Functions: strfromf128 and strtof128.
New <math.h> features from ISO/IEC TS 18661-3:
- Very Large Number macro: HUGE_VAL_F128.
- Signaling NaN macro: SNANF128.
- Trigonometric Functions: acosf128, asinf128, atanf128, atan2f128,
cosf128, sinf128, tanf128.
- Hyperbolic Functions: acoshf128, asinhf128, atanhf128, coshf128,
sinhf128, tanhf128.
- Exponential and Logarithmic Functions: expf128, exp2f128, expm1f128,
frexpf128, ilogbf128, ldexpf128, llogbf128, logf128, log10f128,
log1pf128, log2f128, logbf128, modff128, scalbnf128, scalblnf128.
- Power and Absolute Functions: cbrtf128, fabsf128, hypotf128, powf128,
sqrtf128.
- Error and Gamma Functions: erff128, erfcf128, lgammaf128, tgammaf128.
- Nearest Integer Functions: ceilf128, floorf128, nearbyintf128,
rintf128, lrintf128, llrintf128, roundf128, lroundf128, llroundf128,
roundevenf128, truncf128, fromfpf128, ufromfpf128, fromfpxf128,
ufromfpxf128.
- Remainder Functions: fmodf128, remainderf128, remquof128.
- Manipulation Functions: copysignf128, nanf128, nextafterf128,
nextupf128, nextdownf128, canonicalizef128.
- Minimum, Maximum, and Positive Difference Functions: fdimf128,
fmaxf128, fminf128, fmaxmagf128, fminmagf128.
- Floating Multiply-Add Function: fmaf128.
- Total Order Functions: totalorderf128, totalordermagf128.
- Payload Functions: getpayloadf128, setpayloadf128, setpayloadsigf128.
New <complex.h> functions from ISO/IEC TS 18661-3:
- Trigonometric Functions: cacosf128, casinf128, catanf128, ccosf128,
csinf128, ctanf128.
- Hyperbolic Functions: cacoshf128, casinhf128, catanhf128, ccoshf128,
csinhf128, ctanhf128.
- Exponential and Logarithmic Functions: cexpf128, clogf128.
- Power and Absolute Functions: cabsf128, cpowf128, csqrtf128.
- Manipulation Functions: cargf128, cimagf128, CMPLXF128, conjf128,
cprojf128, crealf128.
The following <wchar.h> functions are added as GNU extensions:
- Wide String Conversion Functions: wsctof128, wcstof128_l.
The following <stdlib.h> function is added as a GNU extension:
- String Conversion Function: strtof128_l.
The following <math.h> features are added as GNU extensions:
- Predefined Mathematical Constants: M_Ef128, M_LOG2Ef128,
M_LOG10Ef128, M_LN2f128, M_LN10f128, M_PIf128, M_PI_2f128,
M_PI_4f128, M_1_PIf128, M_2_PIf128, M_2_SQRTPIf128, M_SQRT2f128,
M_SQRT1_2f128.
- Trigonometric Function: sincosf128.
- Exponential and Logarithmic Function: exp10f128.
- Error and Gamma Function: lgammaf128_r.
- Bessel Functions: j0f128, j1f128, jnf128, y0f128, y1f128, ynf128.
The following <complex.h> function is added as a GNU extension:
- Exponential and Logarithmic Function: clog10f128.
The new functions and macros correspond to those present for other
floating-point types (except for a few obsolescent interfaces not
supported for the new type), with F128 or f128 suffixes; for example,
strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
printf or scanf formats for the new type; the strfromf128 and strtof128
interfaces should be used instead.
Deprecated and removed features, and other changes affecting compatibility: