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 v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 74.5 % 989 737 Test Date: 2026-07-23 17:04:59 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	51472
Flm_Fl_mul	82642
Flm_Fl_mul_OK	8691473
Flm_Fl_mul_inplace	0
Flm_Fl_mul_pre	26365931
Flm_Fl_mul_pre_i	17757100
Flm_Fl_sub	3710
Flm_Flc_mul	1086735
Flm_Flc_mul_i	97082575
Flm_Flc_mul_i_2	339526
Flm_Flc_mul_i_SMALL	84342072
Flm_Flc_mul_pre	6791
Flm_Flc_mul_pre_Flx	7686577
Flm_add	29322
Flm_center	11347
Flm_mul	14785934
Flm_mul_classical	28998261
Flm_mul_i	29006549
Flm_mul_pre	14070201
Flm_mul_sw	8288
Flm_neg	325386
Flm_powers	840
Flm_powu	51360
Flm_sqr	92727
Flm_sub	26307082
Flm_to_mod	59694
Flm_transpose	736441
Flmrow_Flc_mul_SMALL	781545485
Flmrow_Flc_mul_i	578160034
Flv_Fl_div	4706
Flv_Fl_div_inplace	0
Flv_Fl_mul	1754477
Flv_Fl_mul_inplace	0
Flv_Fl_mul_part_inplace	7984732
Flv_add	569672285
Flv_add_inplace	510800
Flv_center	164710
Flv_dotproduct	730750
Flv_dotproduct_pre	62204
Flv_dotproductspec_SMALL	9720389
Flv_dotproductspec_i	748652
Flv_neg	4110898
Flv_neg_inplace	6406
Flv_sub	242728660
Flv_sub_inplace	0
Flv_sum	3871
Flx_dotproduct	0
Flx_dotproduct_pre	9743876
FpC_FpV_mul	5881
FpC_Fp_mul	974705
FpC_add	284658
FpC_center	7079318
FpC_center_inplace	0
FpC_red	31838837
FpC_sub	965837
FpC_to_mod	105
FpM_FpC_mul	1763484
FpM_FpC_mul_FpX	1234380
FpM_FpC_mul_i	1763484
FpM_Fp_mul	768116
FpM_add	0
FpM_center	2815899
FpM_center_inplace	42
FpM_mul	2062229
FpM_powu	0
FpM_red	5714001
FpM_sub	0
FpM_to_mod	226
FpMrow_FpC_mul_i	18957120
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	68961
FpV_add	0
FpV_dotproduct	8684312
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	5970
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	13459751
ZVV_to_FlvV	14722
ZV_to_Flv	58166579
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	101597376
__Flm_Flc_mul_i_SMALL	87520639
add_slices	33152
add_slices_ip	66304
gen_FpM_Wiedemann	147
gen_ZpM_Dixon_Wiedemann	0
gen_matid	2464
matid_F2xqM	35
matid_Flm	1443973
matid_FlxqM	56
random_Flv	41431
random_FpC	924
random_FpV	147
scalar_Flm	42
subtract_slices	58016
to_intmod	18975948
vecprow	23036
wrap_relcomb	0
wrap_relcomb_modp	0
wrap_relker	68814
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