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 30862-ea47bd413c) Lines: 1978 2156 91.7 % Date: 2026-05-05 09:26:54 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
FpXXk_divexact_i	175
FpX_invLaplace	186
FpXQM_autsum_sqr	217
FpXXk_FpX_div_i	245
FpXM_FpXQV_eval	315
FpXQM_autsum_mul	315
FpXQ_auttrace_sqr	317
FpXQ_auttrace_mul	360
FpXQ_auttrace	434
_FpXQ_easylog	469
FpXk_gcd	490
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	597
FpXXk_FpX_div	602
_FpXQ_rand	679
FpX_gcd_check	814
FpXQ_sqrtn_spec	858
FpX_halfgcd	977
FpXXkX_FpXXk_divexact	1008
FpX_convol	1008
Fp_neg_FpX	1025
FpXQ_sumautsum_msqr	1123
FpXXkX_FpXXk_divexact_s	1176
FpXQ_sqrtn	1222
FpXQ_sumautsum	1266
FpXk_mul	1309
FpXC_FpXQV_eval	1470
FpX_invBarrett_Newton	1490
FpXXk_primpart_FpX	1617
FpXXk_rec	1617
FpXQ_transmul_init	1660
FpXQ_autpowers	1736
FpXQ_order	1814
Z_to_FpX	1831
FpXQ_sumautsum_sqr	2264
FpXQ_autsum	2806
get_FpXQ_star	2807
FpXXk_divides	2926
FpXQ_autsum_sqr	2932
FpXQ_autsum_mul	3092
FpXXk_content	3150
_FpXQ_zero	3360
FpX_halfres_update	3749
FpX_invBarrett_basecase	3939
FpX_resultant_basecase	4040
bounded_order	4379
FpXQ_autpow	4475
FpXV_FpX_fromdigits	4564
FpXQ_autpow_sqr	4569
FpXXk_divides_i	4725
FpXXk_content_FpX	5061
FpX_invBarrett	5482
FpXXk_divexact_s	5607
RgXXk_modXn	6027
RgXXk_shift	6027
FpXn_div	6412
FpXn_inv	6412
gener_FpXQ	7030
FpXQ_transmul	7175
FpXT_sqr	7602
FpX_divu	8610
FpXXkX_FpXXk_divides_s	10080
get_FpXQ_algebra	10199
RgXk_var_lowest	10864
FpX_Fp_sub_shallow	11146
FpX_fromNewton	11355
FpX_digits	11403
FpXXk_gcd_i	12817
FpX_extgcd_halfgcd	13757
FpXQ_minpoly	14027
_FpXQ_red	16233
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	21065
FpXV_factorback	23258
Fp_red_FpX	24327
Fp_FpX_sub	25671
FpX_matFrobenius	31493
FpV_invVandermonde	31866
FpX_FpV_multieval_tree	31880
FpV_producttree	31881
FpX_FpXV_multirem_dbl_tree	32468
FpXV_producttree_dbl	32469
FpX_halfres_basecase	33802
FpV_inv	34308
_FpX_pow	35493
FpXM_FpX_mul2	36106
FpX_halfres_i	52762
_FpXQ_sub	52941
FpX_gcd_basecase	53064
FpX_integXn	55575
FpXn_mulhigh	59480
FpXk_renormalize	60424
FpX_dotproduct	61210
Rg_to_FpXk	65632
FpXQ_matrix_pow	66290
FpXQ_sqrt	78673
gener_FpXQ_local	84111
gener_FpXQ_i	84148
_FpX_sqr	86660
FpX_addmulmul	87863
FpX_halve	92694
FpV_roots_to_pol	93537
FpX_mulhigh_i	115055
_FpX_divrem	134778
FpXXk_divides_s	136864
FpX_Fp_mul_to_monic	140564
FpX_div_by_X_x	166693
FpX_rescale	178973
FpXn_red	204530
_FpXQ_one	219159
FpX_valrem	254731
random_FpX	257988
FpXV_prod	312025
FpX_center	314340
FpX_powu	318342
FpXQ_norm	363850
_FpX_mul	373807
FpXQ_powers	390274
FpXQ_issquare	401772
FpXV_red	404378
FpX_resultant	417190
RgXV_to_RgM_lg	417559
RgX_blocks_RgM	417572
FpX_FpXQV_eval	418257
FpX_Frobenius	462655
FpX_mulu	479232
FpX_Newton	523660
FpXQ_div	530976
FpXn_recip	534512
Fp_FpXQ_log	544095
FpX_extgcd_basecase	583992
FpX_Fp_sub	588315
FpXQ_powu	608387
FpX_Fp_div	611491
FpX_neg	688997
FpXQ_log	707979
FpX_is_squarefree	716103
FpX_FpXQ_eval	796485
FpX_divrem_Barrett	815403
FpX_divrem_Barrettspec	816149
_FpXQ_pow	826923
FpXQ_pow_Frobenius	842122
FpX_Fp_add	895435
FpX_eval	967989
FpX_shift	985391
FpX_gcd	1037702
FpXQ_invsafe	1097229
FpXQ_inv	1097230
Fp_issquare	1336383
FpX_extgcd	1443505
FpXQ_pow	1566025
FpX_get_red	1625259
Fq_issquare	1631319
FpX_deriv	1634882
FpX_recipspec	1638160
ZX_lgrenormalizespec	1662687
FpXT_red	1664011
FpX_normalize	1857015
to_Flxq	2137508
FpX_center_i	2247431
Fq_log	2478430
FpXn_mul	2564811
_FpXQ_mul	2712868
FpXk_sub	3718568
FpXk_red	4514377
_FpXQ_sqr	5839020
FpX_Fp_mul	6288685
FpX_Fp_mulspec	6303238
FpXQ_sqr	6334662
FpX_sqr	6527400
FpX_mulspec	9202885
FpXQ_mul	13202838
FpX_divrem	14481745
FpX_sub	14577804
FpX_subspec	15393950
FpXQ_red	17709058
FpX_add	18311463
FpX_mul	28483732
to_Flx	44783349
FpX_divrem_basecase	67389502
FpX_rem	73195762
get_FpX_red	87693944
FpX_red	97601951

Generated by: LCOV version 1.16