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path: root/erts/emulator/sys/win32/sys_float.c
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2016-04-26matherr() must not fake an FP exceptionMikael Pettersson
When FP exceptions are used, matherr() forces a fake FP exception, which is interpreted as an error by the checking code after a math routine call. This is wrong for several reasons: - it's not necessary for error checking: when FP exceptions aren't used, matherr() is a stub and no information is derived from it being called - it's not necessary for FPU maintenance: the FPU only needs to be reprogrammed after an actual FP exception - it causes false negatives: matherr() may be called even though Erlang doesn't consider the case to be an error (exp() and pow() underflows on Solaris for instance); with FP exceptions enabled they are incorrectly considered errors The fix is to remove all FP exception related code from matherr().
2016-03-15update copyright-yearHenrik Nord
2015-06-18Change license text to APLv2Bruce Yinhe
2013-05-22Merge branch 'sverk/win64-fixes' into maintSverker Eriksson
* sverk/win64-fixes: erts: Change some more 'long' to pointer sized int (ErlDrvUInt) erts: Fix crash in nif_SUITE for win64 erts: Fix assert in isdigit for negative characters
2013-05-03erts: Fix assert in isdigit for negative charactersSverker Eriksson
2013-04-30Define matherr only on platforms where it is usedAnthony Ramine
2013-01-25Update copyright yearsBjörn-Egil Dahlberg
2013-01-21Text representation of a float formatted using given options.Serge Aleynikov
This BIF solves a problem of float_to_list/1 that doesn't allow specifying the number of digits after the decimal point when formatting floats. float_to_list(Float, Options) -> string() Float = float() Options = [Option] Option = {decimals, Decimals::0..249} | {scientific, Decimals::0..249} | compact Returns a string which corresponds to the text representation of a `Float` formatted using given options. When decimals option is specified the returned value will contain at most `Decimals` number of digits past the decimal point. When `compact` option is provided the trailing zeros at the end of the list are truncated (this option is only meaningful together with the `decimals` option). When `scientific` option is provided, the float will be formatted using scientific notation with `Decimals` digits of precision. If `Options` is `[]` the function behaves like `float_to_list/1`. When using `decimals` option and the number doesn't fit in the static internal buffer of 256 bytes the function throws `badarg`.
2012-09-07Replace sprintf with erts_snprintf in beamBjörn-Egil Dahlberg
2011-12-09Update copyright yearsBjörn-Egil Dahlberg
2011-12-02Build Win64 Erlang emulator using MSYSunknown
Still does not run, just compiles.
2009-11-20The R13B03 release.OTP_R13B03Erlang/OTP