INTRO(3M) — Unix Programmer’s Manual
NAME
intro − introduction to mathematical library functions
DESCRIPTION
These functions constitute the math library, libm. They are automatically loaded as needed by the Fortran compiler f77(1). The link editor searches this library under the -lm option. Declarations for these functions may be obtained from the “math.h” include file.
There are actually three versions of this library. The Fortran and C compilers automatically use the appropriate version. When linking by hand, the user must specify the correct library, using one of the following options.
OPTIONS
−lm References the math library /usr/lib/libm.a, for use with IEEE floating point format software.
−ldecm References the math library /usr/lib/libdecm.a, for use with DEC floating point format software.
−lskym References the math library /usr/lib/libskym.a, for use with the IEEE Sky board floating point processor.
4th Berkeley Distribution — 15 August 1985