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 30733-eb2d773d38) Lines: 1978 2156 91.7 % Date: 2026-03-03 09:24:12 Functions: 213 228 93.4 % Legend: Lines: hit not hit

Function Name	Hit count
Fp2_norm	18961
Fp2_sqrt	19392
FpVV_polint_tree	15
FpV_FpM_polint	0
FpV_inv	34307
FpV_invVandermonde	31866
FpV_polint	22
FpV_producttree	31881
FpV_roots_to_pol	93516
FpXC_FpXQV_eval	1050
FpXC_FpXQ_eval	588
FpXM_FpXQV_eval	105
FpXM_FpX_mul2	36106
FpXM_mul2	17253
FpXQM_autsum	77
FpXQM_autsum_mul	105
FpXQM_autsum_sqr	77
FpXQ_autpow	4478
FpXQ_autpow_msqr	42
FpXQ_autpow_sqr	4572
FpXQ_autpowers	1736
FpXQ_autsum	2809
FpXQ_autsum_mul	3095
FpXQ_autsum_sqr	2935
FpXQ_auttrace	434
FpXQ_auttrace_mul	360
FpXQ_auttrace_sqr	317
FpXQ_charpoly	15
FpXQ_conjvec	8
FpXQ_div	530976
FpXQ_inv	1097125
FpXQ_invsafe	1097125
FpXQ_issquare	401219
FpXQ_log	707980
FpXQ_matrix_pow	66289
FpXQ_minpoly	14027
FpXQ_mul	12029702
FpXQ_norm	363815
FpXQ_order	1814
FpXQ_pow	1565469
FpXQ_pow_Frobenius	842110
FpXQ_powers	389185
FpXQ_powu	608146
FpXQ_red	17783602
FpXQ_sqr	6748089
FpXQ_sqrt	78673
FpXQ_sqrtl_spec	543
FpXQ_sqrtn	1222
FpXQ_sqrtn_spec	858
FpXQ_sumautsum	1266
FpXQ_sumautsum_msqr	1123
FpXQ_sumautsum_sqr	2264
FpXQ_trace	20999
FpXQ_transmul	7175
FpXQ_transmul_init	1660
FpXT_red	1580653
FpXT_sqr	7602
FpXV_FpX_fromdigits	4564
FpXV_chinese	588
FpXV_chinese_tree	588
FpXV_chinesetree	588
FpXV_factorback	23258
FpXV_invdivexact	588
FpXV_prod	312003
FpXV_producttree	588
FpXV_producttree_dbl	32469
FpXV_red	403343
FpXV_sqr	588
FpXXkX_FpXXk_divexact	1008
FpXXkX_FpXXk_divexact_s	1176
FpXXkX_FpXXk_divides_s	10150
FpXXk_FpX_div	602
FpXXk_FpX_div_i	245
FpXXk_content	3164
FpXXk_content_FpX	5075
FpXXk_divexact_i	175
FpXXk_divexact_s	5607
FpXXk_divides	2940
FpXXk_divides_i	4725
FpXXk_divides_s	136962
FpXXk_gcd_i	12838
FpXXk_primpart_FpX	1624
FpXXk_rec	1624
FpX_FpV_multieval	0
FpX_FpV_multieval_tree	31879
FpX_FpXM_qmul	17162
FpX_FpXQV_eval	416449
FpX_FpXQ_eval	796177
FpX_FpXV_multirem	0
FpX_FpXV_multirem_dbl_tree	32467
FpX_FpXV_multirem_tree	588
FpX_Fp_add	892376
FpX_Fp_add_shallow	0
FpX_Fp_div	611490
FpX_Fp_mul	5699657
FpX_Fp_mul_to_monic	138338
FpX_Fp_mulspec	5714214
FpX_Fp_sub	547771
FpX_Fp_sub_shallow	11146
FpX_Frobenius	462188
FpX_Laplace	590
FpX_Newton	523655
FpX_add	16370589
FpX_addmulmul	87863
FpX_center	314235
FpX_center_i	2247359
FpX_chinese_coprime	0
FpX_convol	994
FpX_deriv	1632652
FpX_digits	11403
FpX_disc	42
FpX_div_by_X_x	166696
FpX_divrem	14459540
FpX_divrem_Barrett	815463
FpX_divrem_Barrettspec	816209
FpX_divrem_basecase	67109614
FpX_divu	8610
FpX_dotproduct	61210
FpX_eval	967987
FpX_extgcd	1440968
FpX_extgcd_basecase	583992
FpX_extgcd_halfgcd	13757
FpX_extresultant	77
FpX_extresultant_basecase	24
FpX_fromNewton	11348
FpX_gcd	1037371
FpX_gcd_basecase	53064
FpX_gcd_check	814
FpX_get_red	1623055
FpX_halfgcd	977
FpX_halfgcd_all	16690
FpX_halfgcd_all_i	16550
FpX_halfres	106
FpX_halfres_basecase	33802
FpX_halfres_i	52762
FpX_halfres_split	18960
FpX_halfres_update	3749
FpX_halve	92694
FpX_integ	0
FpX_integXn	55575
FpX_invBarrett	5490
FpX_invBarrett_Newton	1498
FpX_invBarrett_basecase	3939
FpX_invLaplace	186
FpX_is_squarefree	716090
FpX_matFrobenius	31492
FpX_mul	27289032
FpX_mulhigh_i	115055
FpX_mulspec	9201480
FpX_mulu	1059689
FpX_neg	467276
FpX_normalize	1852774
FpX_powu	318342
FpX_recipspec	1638291
FpX_red	95967027
FpX_rem	72409202
FpX_rescale	178985
FpX_resultant	417114
FpX_resultant_basecase	3971
FpX_shift	985391
FpX_sqr	6940869
FpX_sub	14564824
FpX_subspec	15381028
FpX_valrem	254736
FpXk_gcd	497
FpXk_mul	1316
FpXk_red	4514391
FpXk_renormalize	60501
FpXk_sub	3718568
FpXn_div	6412
FpXn_exp	0
FpXn_expint	17263
FpXn_inv	6412
FpXn_mul	2564804
FpXn_mulhigh	59480
FpXn_recip	534510
FpXn_red	204530
FpXn_sqr	0
Fp_FpXQ_log	544095
Fp_FpX_sub	25643
Fp_issquare	1335844
Fp_neg_FpX	1025
Fp_red_FpX	21247
FqV_inv	0
Fq_ispower	70
Fq_issquare	1630801
Fq_log	2478414
RgXV_to_RgM_lg	415904
RgXXk_modXn	6034
RgXXk_shift	6034
RgX_blocks_RgM	415914
RgXk_var_lowest	10948
Rg_is_FpXk	0
Rg_to_FpXk	65744
ZX_lgrenormalizespec	1662976
Z_to_FpX	1831
_FpXQ_add	0
_FpXQ_easylog	469
_FpXQ_mul	2712474
_FpXQ_one	219022
_FpXQ_pow	826923
_FpXQ_rand	679
_FpXQ_red	59395
_FpXQ_sqr	5836702
_FpXQ_sub	52941
_FpXQ_zero	3360
_FpX_add	20062
_FpX_divrem	134778
_FpX_mul	373463
_FpX_one	0
_FpX_pow	35493
_FpX_red	0
_FpX_sqr	86660
_FpX_zero	0
bounded_order	4384
gc_chinese	588
gener_FpXQ	7030
gener_FpXQ_i	84147
gener_FpXQ_local	84111
get_FpXQ_algebra	10199
get_FpXQ_star	2807
get_FpX_algebra	0
get_FpX_red	86873321
matJ2_FpXM	8
matid2_FpXM	24
random_FpX	257871
to_Flx	44330491
to_Flxq	2135537

Generated by: LCOV version 1.16