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 ```SCALB(3) Linux Programmers Manual SCALB(3) NAME scalb, scalbf, scalbl, scalbn, scalbnf, scalbnl, scalbln, scalblnf, scalblnl - multiply floating-point number by integral power of radix SYNOPSIS #include double scalb(double x, double exp); float scalbf(float x, double exp); long double scalbl(long double x, double exp); double scalbn(double x, int exp); float scalbnf(float x, int exp); long double scalbnl(long double x, int exp); double scalbln(double x, long int exp); float scalblnf(float x, long int exp); long double scalblnl(long double x, long int exp); Link with -lm. Feature Test Macro Requirements for glibc (see feature_test_macros(7)): scalb(), scalbf(), scalbl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 500 scalbn(), scalbnf(), scalbnl(): _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99 scalbln(), scalblnf(), scalblnl(): _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE; or cc -std=c99 DESCRIPTION These functions multiply their first argument x by FLT_RADIX (probably 2) to the power exp. If FLT_RADIX equals 2, then scalbn() is equivalent to ldexp(3). The value of FLT_RADIX is found in . CONFORMING TO The scalb() function is from 4.3BSD. The scalbn() and scalbln() func tions are from C99. All three are in POSIX.1-2001. The scalb() func tion is marked obsolescent. SEE ALSO ldexp(3) COLOPHON This page is part of release 3.05 of the Linux man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. 2007-07-26 SCALB(3) ```
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