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 30605-980f9eb85c) Lines: 1976 2156 91.7 % Date: 2026-01-11 09:21:30 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	238
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
FpXXk_FpX_div	588
FpX_FpXV_multirem_tree	588
gc_chinese	588
FpX_Laplace	590
FpXk_gcd	595
_FpXQ_rand	679
FpX_gcd_check	814
FpXQ_sqrtn_spec	858
FpX_halfgcd	977
FpX_convol	994
Fp_neg_FpX	1025
FpXQ_sumautsum_msqr	1123
FpXQ_sqrtn	1222
FpXXkX_FpXXk_divexact	1225
FpXQ_sumautsum	1266
FpXXkX_FpXXk_divexact_s	1449
FpXC_FpXQV_eval	1470
FpX_invBarrett_Newton	1494
FpXk_mul	1603
FpXQ_transmul_init	1660
Z_to_FpX	1726
FpXQ_autpowers	1736
FpXQ_order	1814
FpXXk_primpart_FpX	1904
FpXXk_rec	1904
FpXQ_sumautsum_sqr	2264
FpXQ_autsum	2771
get_FpXQ_star	2807
FpXQ_autsum_sqr	2897
FpXQ_autsum_mul	3057
_FpXQ_zero	3360
FpXXk_divides	3507
FpX_halfres_update	3749
FpX_invBarrett_basecase	3975
FpX_resultant_basecase	3977
FpXXk_content	3983
bounded_order	4307
FpXQ_autpow	4440
FpXQ_autpow_sqr	4534
FpXV_FpX_fromdigits	4564
FpXXk_divides_i	4718
FpX_invBarrett	5522
FpXXk_content_FpX	5789
FpXXk_divexact_s	6097
FpXn_div	6412
FpXn_inv	6412
RgXXk_modXn	6496
RgXXk_shift	6496
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	12628
FpX_extgcd_halfgcd	13757
FpXQ_minpoly	14027
FpXXk_gcd_i	14182
RgXk_var_lowest	16142
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	21067
Fp_red_FpX	21944
FpXV_factorback	23258
Fp_FpX_sub	25643
FpX_matFrobenius	31492
FpV_invVandermonde	31838
FpX_FpV_multieval_tree	31847
FpV_producttree	31853
FpX_FpXV_multirem_dbl_tree	32435
FpXV_producttree_dbl	32438
FpX_halfres_basecase	33802
FpV_inv	34280
_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	71897
FpXk_renormalize	72751
FpXQ_sqrt	78673
gener_FpXQ_local	84109
gener_FpXQ_i	84147
_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	138432
FpXXk_divides_s	141190
FpX_div_by_X_x	166414
FpX_rescale	178953
FpXn_red	204530
_FpXQ_one	219107
FpX_valrem	254678
random_FpX	258064
_FpXQ_pow	282142
FpXQ_pow_Frobenius	297251
FpXV_prod	311872
FpX_center	314072
FpX_powu	318342
FpXQ_norm	363819
_FpX_mul	373003
FpXQ_powers	390102
FpXQ_issquare	401223
FpXV_red	404292
FpX_resultant	417059
RgXV_to_RgM_lg	417318
RgX_blocks_RgM	417321
FpX_FpXQV_eval	418017
FpX_Frobenius	462260
FpX_neg	467290
FpX_Newton	523622
FpXQ_div	533285
FpXn_recip	534484
Fp_FpXQ_log	544094
FpX_extgcd_basecase	587148
FpX_Fp_sub	588243
FpXQ_powu	608245
FpX_Fp_div	614646
FpXQ_log	707979
FpX_is_squarefree	716089
FpX_FpXQ_eval	796315
FpX_divrem_Barrett	815573
FpX_divrem_Barrettspec	816318
FpX_Fp_add	891790
FpX_eval	967198
FpX_shift	985360
FpXQ_pow	1036181
FpX_gcd	1037960
FpX_mulu	1064116
FpX_get_red	1080059
FpXQ_inv	1100351
FpXQ_invsafe	1100351
Fp_issquare	1335844
FpX_extgcd	1443845
_FpXQ_mul	1624169
Fq_issquare	1630801
FpX_deriv	1632781
FpX_recipspec	1638508
ZX_lgrenormalizespec	1663099
FpXT_red	1663968
FpX_normalize	1852812
to_Flxq	2152123
FpX_center_i	2247359
Fq_log	2478414
FpXn_mul	2564811
FpXk_sub	3718554
FpXk_red	4516967
_FpXQ_sqr	5295996
FpX_Fp_mul	5630397
FpX_Fp_mulspec	5644954
FpXQ_sqr	6211532
FpX_sqr	6404297
FpX_mulspec	9202648
FpXQ_mul	11098112
FpX_divrem	14464334
FpX_sub	14617050
FpX_subspec	15433366
FpX_add	16408543
FpXQ_red	17809562
FpX_mul	26439373
to_Flx	44732172
FpX_divrem_basecase	65746947
FpX_rem	71077538
get_FpX_red	85554016
FpX_red	94656004

Generated by: LCOV version 1.16