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 v2.18.1 lcov report (development 31042-0fbe168e69) Lines: 84.7 % 990 839 Test Date: 2026-07-23 17:04:59 Functions: 87.3 % 150 131 Legend: Lines:     hit not hit

Function Name	Hit count
Flc_lincomb1_inplace	31171171
QM_QC_mul	127091
QM_mul	559155
QM_sqr	700
RgM_check_ZM	598630
RgM_issquare	42
RgV_check_ZV	1502842
ZC_Q_mul	2803611
ZC_ZV_mul	0
ZC_Z_add	370297
ZC_Z_div	3676504
ZC_Z_divexact	5892970
ZC_Z_mul	36957948
ZC_Z_sub	0
ZC_add	27825694
ZC_add_i	37856400
ZC_copy	18819284
ZC_divexactu	2261
ZC_hnfdivrem	10699829
ZC_hnfdivrem_i	11405955
ZC_is_ei	174510
ZC_lincomb	34918688
ZC_lincomb1	16045722
ZC_lincomb1_inplace	66040258
ZC_lincomb1_inplace_i	77221721
ZC_lincomb_1	759498
ZC_modhnf	280
ZC_neg	6374459
ZC_reducemodlll	98017
ZC_reducemodmatrix	112327
ZC_reducemodmatrix_i	112327
ZC_sub	9162740
ZC_sub_i	9578802
ZC_z_mul	64225
ZMV_prod	0
ZMV_to_zmV	49
ZM_Q_mul	1163886
ZM_ZC_mul	25812808
ZM_ZC_mul_i	79173256
ZM_ZV_divrem	0
ZM_Z_div	19308
ZM_Z_divexact	530809
ZM_Z_mul	3383585
ZM_add	844804
ZM_copy	744706
ZM_det_triangular	4271017
ZM_diag_mul	593219
ZM_divexactu	441
ZM_equal	3503695
ZM_equal0	32306
ZM_hnfdivrem	529613
ZM_hnfdivrem_i	529627
ZM_isdiagonal	677498
ZM_ishnf	878852
ZM_isidentity	658486
ZM_isscalar	162863
ZM_max_expi	0
ZM_max_expi_i	0
ZM_max_lg	23337
ZM_max_lg_i	27950095
ZM_modhnf	14
ZM_mul	21128814
ZM_mul_classical	13897628
ZM_mul_diag	21
ZM_mul_fast	839
ZM_mul_i	21531104
ZM_mul_slice	1105
ZM_mul_sw	77134
ZM_mul_worker	1105
ZM_multosym	0
ZM_nc_mul_i	0
ZM_neg	1734805
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	181650
ZM_supnorm	4260
ZM_to_zm	1022
ZM_togglesign	0
ZM_transmul	2289
ZM_transmultosym	532221
ZM_zc_mul	17962452
ZM_zc_mul_i	20114584
ZM_zm_mul	1001616
ZMrow_ZC_mul	137965594
ZMrow_ZC_mul_i	608658306
ZMrow_equal0	16231
ZRED	1170951
ZV_ZM_mul	231351
ZV_ZV_divrem	7
ZV_abscmp	19747
ZV_cmp	3256105
ZV_content	300478
ZV_dotproduct	16705234
ZV_dotproduct_i	19528072
ZV_dotsquare	6868890
ZV_equal	293378
ZV_equal0	14227003
ZV_equal_lg	6528223
ZV_max_expi	0
ZV_max_expi_i	0
ZV_max_lg	10640
ZV_max_lg_i	114766793
ZV_neg_inplace	391750
ZV_prod	8856316
ZV_sum	77
ZV_to_nv	431621
ZV_togglesign	7285733
ZV_zc_mul	2229556
Z_ZC_sub	584240
ZincrementalGS	1279498
Zupdate_row	402385
_ZM_mul	280
_ZM_sqr	24143
_mulii	319253540
add_slices	617072
check_ZV	1939143
matmodhnf	49
matmodhnf_check	98
nm_Z_mul	0
subtract_slices	539938
sw_bound	13974762
vecsmall_prod	14694393
zmV_to_ZMV	126
zm_to_Flm	22694
zm_to_ZM	183728
zvV_equal	1638
zv_ZM_mul	2408
zv_abs	77
zv_canon_inplace	22921521
zv_content	19542720
zv_dotproduct	196399119
zv_equal	68047572
zv_equal0	23113617
zv_neg	51872
zv_neg_inplace	126
zv_prod	958465
zv_prod_Z	1976458
zv_sum	16519
zv_sumpart	0
zv_to_Flv	366646
zv_z_mul	28723

Generated by: LCOV version 2.0-1