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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30851-7844d7b3a5) Lines: 1467 1530 95.9 % Date: 2026-05-02 09:26:58 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
scalepol2n	0
ZX_Uspensky_equal_yes	14
polgraeffe	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5439
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15204
_sqrtnr	22597
polrootsbound_i	27230
polrootsbound	27237
RgX_normalize1	35838
ZX_realroots_irred	48574
realroots	50627
ZX_sturm_irred	116683
ZX_sturm_i	123078
polsolve	166700
split_pols	166703
splitcauchy	166713
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267361
QX_complex_roots	296326
_gen_zero	326028
fix_roots1	398818
conformal_mapping	468812
split_1	468813
split_0_1	469181
split_0_2	469181
logradius	494955
split_2	494958
update_radius	494958
split_fromU	494960
optimize_split	494961
parameters	494961
split_0	495332
refine_F	503355
dft	503361
all_roots	536393
clean_roots	536441
fix_roots	537500
a_posteriori_errors	537501
mygprec_special	537506
logmodulus	608276
logpre_modulus	608280
abs_update_r	780190
ind_maxlog2	904390
isexactscalar	934122
isreal	963773
initdft	998321
dual_modulus	1014552
usp	1126141
ZX_sturmpart	1128318
check_ab	1178946
tocomplex	1215994
isvalidcoeff	1231117
ZX_Uspensky	1313921
conformal_basecase	1406548
conformal_pol	1406667
fujiwara_bound_real	1407008
split_complete	1528163
homothetie	1613696
append_clone	1616283
logmin_modulus	1617773
root_error	1914544
mygprecrc_special	2181566
ZX_rescale2prim	2233983
cmp_complex_appr	2241635
fujiwara_bound	2274066
checkbound	2355020
refine_H	2464698
scalepol	4297657
mygprec_absolute	4344505
_mp_mul	4374554
logmax_modulus	4458980
splitpoleval	5235104
bkeval_single_power	5235875
newton_polygon	5521326
X2XP1	5990984
_mp_sqr	6298479
dblexp	6563010
quicktofp	6987912
RgX_gtofp_bit	7048790
abs_update	8021364
mydbllogr	9566082
homothetie2n	9979896
_gen_nored	11198533
eval_rel_pol	13169503
fft	14196398
_gen_one	14472564
ZX_to_ZiX	16491750
pol_to_gaussint	17628452
_mp_add	24660512
_mp_cmul	34760780
myshiftrc	35579989
homothetie_gauss	36564103
findpower	41031781
lower_bound	41031827
graeffe	49603285
mydbllog2r	57622237
mygprec	63864963
ZiX_sqr	99232645
myshiftic	136064916
mygprecrc	215571275
mydbllog2i	226764929
dbllog2	303897126

Generated by: LCOV version 1.16