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 - ZV.c (source / functions) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 84.9 % 1001 850 Test Date: 2026-10-15 17:03:23 Functions: 87.4 % 151 132 Legend: Lines:     hit not hit

Function Name	Hit count
Flc_lincomb1_inplace	31170512
QM_QC_mul	127093
QM_ishnf	48524
QM_mul	559203
QM_sqr	700
RgM_check_ZM	598635
RgM_issquare	42
RgV_check_ZV	1497225
ZC_Q_mul	2792946
ZC_ZV_mul	0
ZC_Z_add	370297
ZC_Z_div	3676520
ZC_Z_divexact	5893001
ZC_Z_mul	36990374
ZC_Z_sub	0
ZC_add	27825989
ZC_add_i	37856431
ZC_copy	18829143
ZC_divexactu	2261
ZC_hnfdivrem	10699830
ZC_hnfdivrem_i	11406015
ZC_is_ei	174510
ZC_lincomb	34922189
ZC_lincomb1	16047022
ZC_lincomb1_inplace	66150213
ZC_lincomb1_inplace_i	77359435
ZC_lincomb_1	759502
ZC_modhnf	280
ZC_neg	6378148
ZC_reducemodlll	98014
ZC_reducemodmatrix	112324
ZC_reducemodmatrix_i	112324
ZC_sub	9162644
ZC_sub_i	9578688
ZC_z_mul	64229
ZMV_prod	0
ZMV_to_zmV	49
ZM_Q_mul	1166416
ZM_ZC_mul	25860157
ZM_ZC_mul_i	79224227
ZM_ZV_divrem	0
ZM_Z_div	19308
ZM_Z_divexact	530814
ZM_Z_mul	3392494
ZM_add	844729
ZM_copy	750133
ZM_det_triangular	4271002
ZM_diag_mul	593189
ZM_divexactu	441
ZM_equal	3503803
ZM_equal0	32306
ZM_hnfdivrem	529644
ZM_hnfdivrem_i	529658
ZM_isdiagonal	677499
ZM_ishnf	806950
ZM_isidentity	658579
ZM_isscalar	162844
ZM_max_expi	0
ZM_max_expi_i	0
ZM_max_lg	23337
ZM_max_lg_i	27950583
ZM_modhnf	14
ZM_mul	21129086
ZM_mul_classical	13897872
ZM_mul_diag	21
ZM_mul_fast	839
ZM_mul_i	21531376
ZM_mul_slice	1105
ZM_mul_sw	77134
ZM_mul_worker	1105
ZM_multosym	0
ZM_nc_mul_i	0
ZM_neg	1734803
ZM_nm_mul	0
ZM_pow	0
ZM_powu	23618
ZM_reducemodlll	0
ZM_reducemodmatrix	239883
ZM_reducemodmatrix_i	239883
ZM_sqr	25221
ZM_sqr_fast	0
ZM_sqr_i	25221
ZM_sqr_slice	0
ZM_sqr_worker	0
ZM_sub	181573
ZM_supnorm	4260
ZM_to_zm	1022
ZM_togglesign	0
ZM_transmul	2289
ZM_transmultosym	532275
ZM_zc_mul	17962363
ZM_zc_mul_i	20114477
ZM_zm_mul	1001539
ZMrow_ZC_mul	137969736
ZMrow_ZC_mul_i	609117834
ZMrow_equal0	16231
ZRED	1170945
ZV_ZM_mul	231351
ZV_ZV_divrem	7
ZV_abscmp	19747
ZV_cmp	3256167
ZV_content	300481
ZV_dotproduct	16715762
ZV_dotproduct_i	19538077
ZV_dotsquare	6869445
ZV_equal	293378
ZV_equal0	14228065
ZV_equal_lg	6528482
ZV_max_expi	0
ZV_max_expi_i	0
ZV_max_lg	10640
ZV_max_lg_i	114773982
ZV_neg_inplace	391757
ZV_prod	8856317
ZV_sum	77
ZV_to_nv	431621
ZV_togglesign	7288014
ZV_zc_mul	2229556
Z_ZC_sub	584250
ZincrementalGS	1279489
Zupdate_row	402351
_ZM_mul	280
_ZM_sqr	24143
_mulii	319253540
add_slices	617072
check_ZV	1939155
matmodhnf	49
matmodhnf_check	98
nm_Z_mul	0
subtract_slices	539938
sw_bound	13975006
vecsmall_prod	14694393
zmV_to_ZMV	126
zm_to_Flm	22694
zm_to_ZM	183651
zvV_equal	1638
zv_ZM_mul	2408
zv_abs	77
zv_canon_inplace	22921521
zv_content	19540841
zv_dotproduct	196399119
zv_equal	68047524
zv_equal0	23113620
zv_neg	51876
zv_neg_inplace	126
zv_prod	958464
zv_prod_Z	1976465
zv_sum	16524
zv_sumpart	0
zv_to_Flv	366646
zv_z_mul	28724

Generated by: LCOV version 2.0-1