cabs(3) Library Functions Manual cabs(3) NAME cabs, cabsf, cabsl - absolute value of a complex number LIBRARY Math library (libm, -lm) SYNOPSIS #include <complex.h> double cabs(double complex z); float cabsf(float complex z); long double cabsl(long double complex z); DESCRIPTION These functions return the absolute value of the complex number z. The result is a real number. VERSIONS These functions were added in glibc 2.1. ATTRIBUTES For an explanation of the terms used in this section, see attributes(7). ┌─────────────────────────────────────────────────────────────────────────────────────────────────┬───────────────┬─────────┐ │Interface │ Attribute │ Value │ ├─────────────────────────────────────────────────────────────────────────────────────────────────┼───────────────┼─────────┤ │cabs(), cabsf(), cabsl() │ Thread safety │ MT-Safe │ └─────────────────────────────────────────────────────────────────────────────────────────────────┴───────────────┴─────────┘ STANDARDS C99, POSIX.1-2001, POSIX.1-2008. NOTES The function is actually an alias for hypot(a, b) (or, equivalently, sqrt(a*a + b*b)). SEE ALSO abs(3), cimag(3), hypot(3), complex(7) Linux man-pages 6.03 2022-12-15 cabs(3)