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 - FpV.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 74.5 % 989 737 Test Date: 2026-08-20 17:03:29 Functions: 79.1 % 139 110 Legend: Lines:     hit not hit

Function Name	Hit count
Fl_to_intmod	578850
Flc_Flv_mul	14
Flc_to_mod	28
Flm_Fl_add	51466
Flm_Fl_mul	82642
Flm_Fl_mul_OK	8691894
Flm_Fl_mul_inplace	0
Flm_Fl_mul_pre	26366243
Flm_Fl_mul_pre_i	17756991
Flm_Fl_sub	3710
Flm_Flc_mul	1086760
Flm_Flc_mul_i	97084044
Flm_Flc_mul_i_2	339533
Flm_Flc_mul_i_SMALL	84348269
Flm_Flc_mul_pre	6791
Flm_Flc_mul_pre_Flx	7687810
Flm_add	29322
Flm_center	11347
Flm_mul	14787809
Flm_mul_classical	29000288
Flm_mul_i	29008576
Flm_mul_pre	14070353
Flm_mul_sw	8288
Flm_neg	325388
Flm_powers	840
Flm_powu	51360
Flm_sqr	92727
Flm_sub	26307282
Flm_to_mod	59694
Flm_transpose	736395
Flmrow_Flc_mul_SMALL	781877544
Flmrow_Flc_mul_i	578163810
Flv_Fl_div	4706
Flv_Fl_div_inplace	0
Flv_Fl_mul	1754523
Flv_Fl_mul_inplace	0
Flv_Fl_mul_part_inplace	7984360
Flv_add	569672308
Flv_add_inplace	510748
Flv_center	164710
Flv_dotproduct	730750
Flv_dotproduct_pre	62204
Flv_dotproductspec_SMALL	9720713
Flv_dotproductspec_i	748652
Flv_neg	4110920
Flv_neg_inplace	6396
Flv_sub	242732468
Flv_sub_inplace	0
Flv_sum	3871
Flx_dotproduct	0
Flx_dotproduct_pre	9743880
FpC_FpV_mul	5881
FpC_Fp_mul	974707
FpC_add	284658
FpC_center	7079528
FpC_center_inplace	0
FpC_red	31828036
FpC_sub	965837
FpC_to_mod	105
FpM_FpC_mul	1763511
FpM_FpC_mul_FpX	1234380
FpM_FpC_mul_i	1763511
FpM_Fp_mul	768152
FpM_add	0
FpM_center	2815927
FpM_center_inplace	42
FpM_mul	2062275
FpM_powu	0
FpM_red	5714008
FpM_sub	0
FpM_to_mod	226
FpMrow_FpC_mul_i	18957216
FpMs_FpC_mul	0
FpMs_FpCs_solve	0
FpMs_FpCs_solve_safe	0
FpMs_leftkernel_elt	42
FpMs_leftkernel_elt_col	147
FpMs_structelim_back	147
FpVV_to_mod	574
FpV_FpMs_mul	68949
FpV_add	0
FpV_dotproduct	8684314
FpV_dotsquare	0
FpV_red	420
FpV_sub	0
FpV_to_mod	36488
FpXC_to_mod	84035
FpXC_to_mod_raw	0
FpXM_to_mod	0
FpXQC_to_mod	7
FpX_to_mod	1263472
FpX_to_mod_raw	997283
Fp_center_inplace	168
Fp_to_mod	5948
FqC_to_mod	28
FqC_to_mod_raw	107975
FqM_to_mod	26145
Fq_to_mod_raw	582533
ZMV_to_FlmV	4940
ZM_to_Flm	13460678
ZVV_to_FlvV	14721
ZV_to_Flv	58168292
ZV_zMs_mul	0
ZlM_gauss	0
ZpMs_ZpCs_solve	0
_F3C_center_inplace	7
_Flm_mul	21403
_Flm_one	840
_Flm_sqr	92727
_FpC_center_inplace	42
_FpM_mul	0
_FpM_sqr	0
__Flm_Flc_mul_i	101598845
__Flm_Flc_mul_i_SMALL	87528069
add_slices	33152
add_slices_ip	66304
gen_FpM_Wiedemann	147
gen_ZpM_Dixon_Wiedemann	0
gen_matid	2464
matid_F2xqM	35
matid_Flm	1444027
matid_FlxqM	56
random_Flv	41446
random_FpC	924
random_FpV	147
scalar_Flm	42
subtract_slices	58016
to_intmod	18975948
vecprow	23032
wrap_relcomb	0
wrap_relcomb_modp	0
wrap_relker	68802
zCs_to_ZC	0
zMs_ZC_mul	0
zMs_compress	0
zMs_to_ZM	0
zm_mul	2114
zm_zc_mul	6450565
zmrow_zc_mul	97688616

Generated by: LCOV version 2.0-1