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 - Zp.c (source / functions) Coverage Total Hit Test: PARI/GP v2.18.1 lcov report (development 31041-bd73e9fcdd) Lines: 76.3 % 962 734 Test Date: 2026-07-22 22:45:42 Functions: 75.6 % 90 68 Legend: Lines:     hit not hit

Function Name	Hit count
ZpM_ZpC_gauss	0
ZpM_invlift	0
ZpXQXQ_div	0
ZpXQXQ_inv	0
ZpXQXQ_invlift	0
ZpXQX_ZpXQXQ_liftroot	0
ZpXQX_liftroots	0
ZpXQ_sqrt	0
Zq_sqrtnlift	0
_ZpM_eval	0
_ZpM_invd	0
_ZpXQXQ_inv_eval	0
_ZpXQXQ_inv_invd	0
_can5_invd	0
_can5_invl	0
_can5_iter	0
_can5_lin	0
_shift	0
gen_ZpM_Dixon	0
gen_ZpM_Newton	0
gen_ZpXX_Newton	0
to_ZX	0
polhensellift	28
ZqX_ZqXQ_liftroot	35
polteichmuller	35
ZpXQX_liftroots_full	63
ZpXQX_roots	63
ZqX_liftroot	112
ZpX_liftroots	139
ZpXQM_prodFrobenius	147
ZpXQX_liftroot	189
ZpXQX_liftroot_vald	189
ZpX_Frobenius	301
Fp_pow2n	476
mul2n	616
ZpXQX_digits	623
sqr2n	749
ZpXQ_sqrtnlift	1155
ZpX_ZpXQ_liftroot	1729
bezout_lift_fact	1736
_sqrtn_eval	1806
_sqrtn_invd	1806
_can_lin	3654
F3x_frobeniuslift	3717
ZpX_liftroot	6397
ZqX_roots	6941
BezoutPropagate	7441
_can_invd	7476
_can_iter	7476
_canlarge_lin	9212
Flx_Teichmuller_large	10269
_can_invl	11130
Flx_Teichmuller	13986
_canlarge_invd	20706
_canlarge_iter	20706
ZpXQ_log	21103
ZpXQ_log_to_ath	21103
FpXQ_inflate	29918
_canlarge_invl	29918
ZpXQ_div	31605
ZpX_ZpXQ_liftroot_ea	33756
ZpXQX_liftfact	34705
ZqX_liftfact	46570
ZpX_roots	97937
ZpX_liftroots_full	98076
FqV_roots_from_deg1	98138
Zp_div	107987
Zp_exp	107987
ZpXQX_divrem	146440
Zp_sqrtlift	156632
ZpXQ_inv	180719
Zp_log	196232
gen_ZpX_Dixon	200858
BuildTree	201480
MultiLift	201525
ZpXQ_invlift	201822
ZpX_liftfact	249595
Zp_sqrtnlift	265863
gen_ZpX_Newton	266911
ZpXQ_HenselLift	507236
_inv_invd	523095
_inv_eval	523096
ZpXQ_RecTreeLift	1146933
Zp_sqrt	1329879
Zp_inv	1342721
Zp_invlift	1342721
Zp_divlift	1450706
ZpX_HenselLift	1615364
ZpX_RecTreeLift	3988052
quadratic_prec_mask	4880154

Generated by: LCOV version 2.0-1