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 - basemath - bb_hnf.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 96.8 % 664 643 Test Date: 2026-08-01 17:02:16 Functions: 96.4 % 55 53 Legend: Lines:     hit not hit

Function Name	Hit count
Z_split	28
Z_stab	28
_Fp_add	40657757
_Fp_equal0	108208947
_Fp_equal1	30830436
_Fp_extgcd	3894708
_Fp_lquo	2393394
_Fp_mul	48437012
_Fp_neg	5040046
_Fp_rann	2405888
_Fp_red	49963969
_Fp_s	16038566
_Fp_unit	7576541
gaussmodulo	0
gaussmodulo2	0
gaussmoduloall	77
gen_addcol	5915840
gen_addrightmul	4467957
gen_colei	371469
gen_detops	42
gen_elem	3983545
gen_howell	101780
gen_howell_i	1070535
gen_inv	712660
gen_is_inv	220794
gen_is_zerocol	4727299
gen_kernel	56154
gen_kernel_from_howell	100009
gen_kernel_howell	99932
gen_last_inv_diago	201712
gen_leftapply	15434827
gen_matid_hermite	56091
gen_matimage	157794
gen_matmul_hermite	2714687
gen_redcol	18793454
gen_reduce_mod_howell	43953
gen_rightapply	374465
gen_rightlincomb	7967090
gen_rightmulcol	20964034
gen_solve	43953
gen_solve_from_howell	43953
gen_zerocol	3374563
gen_zeromat	1803817
get_Fp_hermite	970603
matdetmod	84
matimagemod	157829
matinvmod	799040
matkermod	56189
matsolvemod	44156
matsolvemod_finite	43953
mkopU	977588
mkopmul	2183187
mkopswap	45843
mkoptransv	3217221
msolvemod0	77

Generated by: LCOV version 2.0-1