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 - FpX.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30673-b6380924e9) Lines: 1976 2156 91.7 % Date: 2026-02-08 09:23:25 Functions: 213 228 93.4 % Legend: Lines: hit not hit

Function Name	Hit count
FpV_FpM_polint	0
FpX_FpV_multieval	0
FpX_FpXV_multirem	0
FpX_Fp_add_shallow	0
FpX_chinese_coprime	0
FpX_integ	0
FpXn_exp	0
FpXn_sqr	0
FqV_inv	0
Rg_is_FpXk	0
_FpXQ_add	0
_FpX_one	0
_FpX_red	0
_FpX_zero	0
get_FpX_algebra	0
FpXQ_conjvec	8
matJ2_FpXM	8
FpVV_polint_tree	15
FpXQ_charpoly	15
FpV_polint	22
FpX_extresultant_basecase	24
matid2_FpXM	24
FpXQ_autpow_msqr	42
FpX_disc	42
Fq_ispower	70
FpX_extresultant	77
FpX_halfres	106
FpXQM_autsum	147
FpX_invLaplace	186
FpXQM_autsum_sqr	217
FpXXk_FpX_div_i	245
FpXXk_divexact_i	287
FpXM_FpXQV_eval	315
FpXQM_autsum_mul	315
FpXQ_auttrace_sqr	317
FpXQ_auttrace_mul	360
FpXQ_auttrace	434
_FpXQ_easylog	469
FpXQ_sqrtl_spec	543
FpXC_FpXQ_eval	588
FpXV_chinese	588
FpXV_chinese_tree	588
FpXV_chinesetree	588
FpXV_invdivexact	588
FpXV_producttree	588
FpXV_sqr	588
FpX_FpXV_multirem_tree	588
gc_chinese	588
FpX_Laplace	590
FpXXk_FpX_div	602
FpXk_gcd	602
_FpXQ_rand	679
FpX_gcd_check	815
FpXQ_sqrtn_spec	858
FpX_halfgcd	977
FpX_convol	994
Fp_neg_FpX	1025
FpXQ_sumautsum_msqr	1123
FpXXkX_FpXXk_divexact	1211
FpXQ_sqrtn	1222
FpXQ_sumautsum	1266
FpXXkX_FpXXk_divexact_s	1435
FpXC_FpXQV_eval	1470
FpX_invBarrett_Newton	1505
FpXk_mul	1596
FpXQ_transmul_init	1660
Z_to_FpX	1726
FpXQ_autpowers	1736
FpXQ_order	1814
FpXXk_primpart_FpX	1897
FpXXk_rec	1897
FpXQ_sumautsum_sqr	2264
FpXQ_autsum	2786
get_FpXQ_star	2807
FpXQ_autsum_sqr	2912
FpXQ_autsum_mul	3072
_FpXQ_zero	3360
FpXXk_divides	3493
FpX_halfres_update	3749
FpXXk_content	3969
FpX_invBarrett_basecase	3975
FpX_resultant_basecase	3976
bounded_order	4324
FpXQ_autpow	4455
FpXQ_autpow_sqr	4549
FpXV_FpX_fromdigits	4564
FpXXk_divides_i	4718
FpX_invBarrett	5533
FpXXk_content_FpX	5775
FpXXk_divexact_s	6069
FpXn_div	6412
FpXn_inv	6412
RgXXk_modXn	6489
RgXXk_shift	6489
gener_FpXQ	7030
FpXQ_transmul	7175
FpXT_sqr	7602
FpX_divu	8610
get_FpXQ_algebra	10199
FpX_Fp_sub_shallow	11146
FpX_fromNewton	11348
FpX_digits	11403
FpXXkX_FpXXk_divides_s	12180
FpX_extgcd_halfgcd	13757
FpXQ_minpoly	14027
FpXXk_gcd_i	14182
RgXk_var_lowest	15330
FpX_halfgcd_all_i	16550
FpX_halfgcd_all	16690
FpX_FpXM_qmul	17162
FpXM_mul2	17253
FpXn_expint	17263
FpX_halfres_split	18960
Fp2_norm	18961
Fp2_sqrt	19392
_FpX_add	20062
FpXQ_trace	21073
Fp_red_FpX	21944
FpXV_factorback	23258
Fp_FpX_sub	25643
FpX_matFrobenius	31492
FpV_invVandermonde	31837
FpV_producttree	31852
FpX_FpV_multieval_tree	31853
FpXV_producttree_dbl	32441
FpX_FpXV_multirem_dbl_tree	32441
FpX_halfres_basecase	33802
FpV_inv	34279
_FpX_pow	35493
FpXM_FpX_mul2	36106
FpX_halfres_i	52762
_FpXQ_sub	52941
FpX_gcd_basecase	53064
FpX_integXn	55575
_FpXQ_red	59395
FpXn_mulhigh	59480
FpX_dotproduct	61210
FpXQ_matrix_pow	66289
Rg_to_FpXk	71071
FpXk_renormalize	71848
FpXQ_sqrt	78673
gener_FpXQ_local	84111
gener_FpXQ_i	84148
_FpX_sqr	86660
FpX_addmulmul	87863
FpX_halve	92694
FpV_roots_to_pol	93383
FpX_mulhigh_i	115055
_FpX_divrem	134778
FpX_Fp_mul_to_monic	138418
FpXXk_divides_s	140742
FpX_div_by_X_x	166415
FpX_rescale	178954
FpXn_red	204530
_FpXQ_one	219126
FpX_valrem	254685
random_FpX	258151
_FpXQ_pow	282142
FpXQ_pow_Frobenius	297272
FpXV_prod	311878
FpX_center	314074
FpX_powu	318342
FpXQ_norm	363819
_FpX_mul	373001
FpXQ_powers	390144
FpXQ_issquare	401223
FpXV_red	404290
FpX_resultant	417046
RgXV_to_RgM_lg	417339
RgX_blocks_RgM	417349
FpX_FpXQV_eval	418043
FpX_Frobenius	462261
FpX_neg	467291
FpX_Newton	523626
FpXQ_div	533286
FpXn_recip	534478
Fp_FpXQ_log	544095
FpX_extgcd_basecase	587149
FpX_Fp_sub	588285
FpXQ_powu	608246
FpX_Fp_div	614647
FpXQ_log	707980
FpX_is_squarefree	716088
FpX_FpXQ_eval	796349
FpX_divrem_Barrett	815662
FpX_divrem_Barrettspec	816409
FpX_Fp_add	891790
FpX_eval	967209
FpX_shift	985359
FpXQ_pow	1036215
FpX_gcd	1037827
FpX_mulu	1064116
FpX_get_red	1080167
FpXQ_invsafe	1100341
FpXQ_inv	1100342
Fp_issquare	1335844
FpX_extgcd	1443940
_FpXQ_mul	1624129
Fq_issquare	1630801
FpX_deriv	1632793
FpX_recipspec	1638697
ZX_lgrenormalizespec	1663548
FpXT_red	1664216
FpX_normalize	1852831
to_Flxq	2152364
FpX_center_i	2247373
Fq_log	2478427
FpXn_mul	2564804
FpXk_sub	3718554
FpXk_red	4516890
_FpXQ_sqr	5295719
FpX_Fp_mul	5630635
FpX_Fp_mulspec	5645192
FpXQ_sqr	6211256
FpX_sqr	6404080
FpX_mulspec	9202995
FpXQ_mul	11098343
FpX_divrem	14462172
FpX_sub	14617165
FpX_subspec	15433572
FpX_add	16408563
FpXQ_red	17810847
FpX_mul	26440551
to_Flx	44735811
FpX_divrem_basecase	65745505
FpX_rem	71087269
get_FpX_red	85557985
FpX_red	94660167

Generated by: LCOV version 1.16