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Diffstat (limited to 'doc/quickjs.texi')
| -rw-r--r-- | doc/quickjs.texi | 51 |
1 files changed, 4 insertions, 47 deletions
diff --git a/doc/quickjs.texi b/doc/quickjs.texi index 34ddf35..83294e8 100644 --- a/doc/quickjs.texi +++ b/doc/quickjs.texi @@ -24,10 +24,6 @@ ES2023 specification @footnote{@url{https://tc39.es/ecma262/2023 }} including modules, asynchronous generators, proxies and BigInt. -It supports mathematical extensions such as big decimal float float -numbers (BigDecimal), big binary floating point numbers (BigFloat), -and operator overloading. - @section Main Features @itemize @@ -47,8 +43,6 @@ features from the upcoming ES2024 specification @item Garbage collection using reference counting (to reduce memory usage and have deterministic behavior) with cycle removal. -@item Mathematical extensions: BigDecimal, BigFloat, operator overloading, bigint mode, math mode. - @item Command line interpreter with contextual colorization and completion implemented in Javascript. @item Small built-in standard library with C library wrappers. @@ -123,10 +117,6 @@ source is @code{import}. @item --script Load as ES6 script (default=autodetect). -@item --bignum -Enable the bignum extensions: BigDecimal object, BigFloat object and -the @code{"use math"} directive. - @item -I file @item --include file Include an additional file. @@ -193,21 +183,8 @@ when the @code{-fno-x} options are used. @item -fno-[eval|string-normalize|regexp|json|proxy|map|typedarray|promise|bigint] Disable selected language features to produce a smaller executable file. -@item -fbignum -Enable the bignum extensions: BigDecimal object, BigFloat object and -the @code{"use math"} directive. - @end table -@section @code{qjscalc} application - -The @code{qjscalc} application is a superset of the @code{qjs} -command line interpreter implementing a Javascript calculator with -arbitrarily large integer and floating point numbers, fractions, -complex numbers, polynomials and matrices. The source code is in -@file{qjscalc.js}. More documentation and a web version are available at -@url{http://numcalc.com}. - @section Built-in tests Run @code{make test} to run the few built-in tests included in the @@ -301,25 +278,6 @@ ECMA402 (Internationalization API) is not supported. @end itemize -@subsection Mathematical extensions - -The mathematical extensions are fully backward compatible with -standard Javascript. See @code{jsbignum.pdf} for more information. - -@itemize - -@item @code{BigDecimal} support: arbitrary large floating point numbers in base 10. - -@item @code{BigFloat} support: arbitrary large floating point numbers in base 2. - -@item Operator overloading. - -@item The directive @code{"use bigint"} enables the bigint mode where integers are @code{BigInt} by default. - -@item The directive @code{"use math"} enables the math mode where the division and power operators on integers produce fractions. Floating point literals are @code{BigFloat} by default and integers are @code{BigInt} by default. - -@end itemize - @section Modules ES6 modules are fully supported. The default name resolution is the @@ -1105,12 +1063,11 @@ binary properties. The full Unicode library weights about 45 KiB (x86 code). -@section BigInt, BigFloat, BigDecimal +@section BigInt -BigInt, BigFloat and BigDecimal are implemented with the @code{libbf} -library@footnote{@url{https://bellard.org/libbf}}. It weights about 90 -KiB (x86 code) and provides arbitrary precision IEEE 754 floating -point operations and transcendental functions with exact rounding. +BigInts are represented using binary two's complement notation. An +additional short bigint value is used to optimize the performance on +small BigInt values. @chapter License |