Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

with GMP kernel
with GMP kernel using --mt=pthread
with native kernel, including micro-assembler code
with native kernel, without micro-assembler
with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view:	top level - kernel/gmp		Hit	Total	Coverage
Test:	PARI/GP v2.18.1 lcov report (development 30535-d1c72762fc)	Lines:	789	825	95.6 %
Date:	2025-10-30 09:21:33	Functions:	58	60	96.7 %
Legend:	Rating: low: < 75 % medium: >= 75 % high: >= 90 %

Filename

Line Coverage

Functions

mp.c

95.0 %

683 / 719

96.4 %

54 / 56

gcd.c

100.0 %

30 / 30

100.0 %

2 / 2

gcdext.c

100.0 %

76 / 76

100.0 %

2 / 2

Generated by: LCOV version 1.16