manual: significand() uses FLT_RADIX, not 2

It's implemented using scalb(), which uses FLT_RADIX, AFAIK.

Link: <https://lore.kernel.org/linux-man/ZeYKUOKYS7G90SaV@debian/T/#mf21ab57e16b92eb6be6c7df79dc0eb43d4454056>
Reported-by: Morten Welinder <mwelinder@gmail.com>
Cc: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org>
Cc: Vincent Lefevre <vincent@vinc17.net>
Cc: DJ Delorie <dj@redhat.com>
Cc: Paul Zimmermann <Paul.Zimmermann@inria.fr>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Alejandro Colomar <alx@kernel.org>
Reviewed-by: DJ Delorie <dj@redhat.com>
This commit is contained in:
Alejandro Colomar 2024-03-31 22:38:52 +02:00 committed by Adhemerval Zanella
parent e01b3b86e8
commit 95c70fd0d4

View File

@ -1395,7 +1395,7 @@ The @code{scalb} function is the BSD name for @code{ldexp}.
@standards{BSD, math.h}
@safety{@prelim{}@mtsafe{}@assafe{}@acsafe{}}
@code{significand} returns the mantissa of @var{x} scaled to the range
@math{[1, 2)}.
@math{[1, @code{FLT_RADIX})}.
It is equivalent to @w{@code{scalb (@var{x}, (double) -ilogb (@var{x}))}}.
This function exists mainly for use in certain standardized tests