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 30838-aa3635ec72) Lines: 1467 1530 95.9 % Date: 2026-04-27 09:26:59 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	15203
_sqrtnr	22596
polrootsbound_i	27095
polrootsbound	27102
RgX_normalize1	35703
ZX_realroots_irred	48573
realroots	50627
ZX_sturm_irred	116678
ZX_sturm_i	123073
split_pols	166698
polsolve	166699
splitcauchy	166710
solve_exact_pol	231509
cleanroots	231763
isexactpol	240117
roots_com	240117
roots_aux	240145
checkvalidpol	267226
QX_complex_roots	296306
_gen_zero	326012
fix_roots1	398802
split_1	468810
conformal_mapping	468811
split_0_1	469172
split_0_2	469176
logradius	494960
parameters	494962
update_radius	494962
split_2	494963
split_fromU	494963
optimize_split	494964
split_0	495335
refine_F	503356
dft	503364
all_roots	536377
clean_roots	536426
fix_roots	537478
a_posteriori_errors	537479
mygprec_special	537483
logmodulus	608278
logpre_modulus	608283
abs_update_r	780197
ind_maxlog2	904395
isexactscalar	934122
isreal	963773
initdft	998327
dual_modulus	1014552
usp	1126138
ZX_sturmpart	1128327
check_ab	1178954
tocomplex	1215968
isvalidcoeff	1230551
ZX_Uspensky	1313928
conformal_basecase	1406551
conformal_pol	1406671
fujiwara_bound_real	1407000
split_complete	1528144
homothetie	1613699
append_clone	1616255
logmin_modulus	1617794
root_error	1914503
mygprecrc_special	2181505
ZX_rescale2prim	2234039
cmp_complex_appr	2241641
fujiwara_bound	2272888
checkbound	2355036
refine_H	2464699
scalepol	4297660
mygprec_absolute	4344378
_mp_mul	4374467
logmax_modulus	4458863
bkeval_single_power	5235382
splitpoleval	5235431
newton_polygon	5521300
X2XP1	5991069
_mp_sqr	6298495
dblexp	6563056
quicktofp	6984509
RgX_gtofp_bit	7048733
abs_update	8021315
mydbllogr	9566105
homothetie2n	9979737
_gen_nored	11199763
eval_rel_pol	13169568
fft	14196162
_gen_one	14472290
ZX_to_ZiX	16490156
pol_to_gaussint	17628390
_mp_add	24660387
_mp_cmul	34760525
myshiftrc	35580161
homothetie_gauss	36563637
lower_bound	41030642
findpower	41032040
graeffe	49602362
mydbllog2r	57619077
mygprec	63866092
ZiX_sqr	99231594
myshiftic	136050851
mygprecrc	215577677
mydbllog2i	226764295
dbllog2	303897445

Generated by: LCOV version 1.16