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 30831-19b50a36d0) Lines: 1467 1530 95.9 % Date: 2026-04-23 09:26:12 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296307
RgX_gtofp_bit	7048879
RgX_normalize1	35705
X2XP1	5990707
ZX_Uspensky	1313959
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15205
ZX_graeffe	5439
ZX_realroots_irred	48575
ZX_rescale2prim	2233844
ZX_sturm	6395
ZX_sturm_i	123072
ZX_sturm_irred	116677
ZX_sturmpart	1128355
ZX_to_ZiX	16492855
ZiX_sqr	99220548
_gen_nored	11203330
_gen_one	14471342
_gen_zero	326000
_intervalcmp	0
_mp_add	24662386
_mp_cmul	34767756
_mp_mul	4374479
_mp_sqr	6298315
_mp_sub	0
_sqrtnr	22598
a_posteriori_errors	537486
abs_update	8021988
abs_update_r	780196
all_roots	536379
append_clone	1616263
bkeval_single_power	5235347
check_ab	1178983
checkbound	2355095
checkvalidpol	267228
clean_roots	536420
cleanroots	231763
cmp_complex_appr	2241654
conformal_basecase	1406566
conformal_mapping	468819
conformal_pol	1406684
dblexp	6563096
dbllog2	303930717
dft	503371
dual_modulus	1014573
eval_rel_pol	13169841
fft	14196724
fft2	7462
findpower	41028835
fix_roots	537482
fix_roots1	398803
fujiwara_bound	2272917
fujiwara_bound_real	1407033
graeffe	49604757
homothetie	1613728
homothetie2n	9979926
homothetie_gauss	36564270
ind_maxlog2	904413
initdft	998342
isexactpol	240117
isexactscalar	934122
isreal	963788
isvalidcoeff	1230557
logmax_modulus	4458859
logmin_modulus	1617793
logmodulus	608294
logpre_modulus	608289
logradius	494969
lower_bound	41029409
mydbllog2i	226778597
mydbllog2r	57619120
mydbllogr	9566701
mygprec	63865524
mygprec_absolute	4344383
mygprec_special	537490
mygprecrc	215577469
mygprecrc_special	2181535
myshiftic	136100183
myshiftrc	35580117
newton_polygon	5521392
optimize_split	494971
parameters	494971
pol_to_gaussint	17628397
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166705
quicktofp	6984538
realroots	50627
refine_F	503362
refine_H	2464737
root_error	1914499
roots	8382
roots_aux	240145
roots_com	240117
rootsdeg0	42
scalepol	4297718
scalepol2n	0
sol_ok	3378
solve_exact_pol	231509
split_0	495338
split_0_1	469186
split_0_2	469187
split_1	468819
split_2	494970
split_complete	1528163
split_fromU	494970
split_pols	166703
splitcauchy	166712
splitpoleval	5235332
tocomplex	1215968
update_radius	494971
usp	1126158

Generated by: LCOV version 1.16